|
|
This document describes enhancements introduced in Cisco IOS Release 12.0(7)XK that expand the trunk-conditioning feature on the Cisco MC3810.
This document includes the following sections:
Cisco MC3810 series concentrators support additional trunk-conditioning commands that specify various trunk-conditioning timing, signaling, and transmission options.
These additional commands provide the following benefits:
Trunk conditioning is not supported on trunks using common channel signaling (CCS) protocols.
North America Channel Associated Signaling (CAS) protocol.
The trunk-conditioning enhancements described in this document require Cisco IOS Release 12.0(7)XK or later.
This feature module describes procedures for configuring trunk conditioning on Cisco MC3810 series concentrators.
In conjunction with the configuration for permanent connections (Cisco trunks and FRF.11 trunks), you can define a voice class and configure specific signaling attributes to the voice class, and then map the voice class to a dial peer.
To configure a voice class to define trunk conditioning attributes, including signaling attributes, use the following commands beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| router(config)# voice class permanent tag | Create a voice class for Cisco trunk (private line) or FRF.11 trunk calls. The range for the tag number is 1 to 10000. The tag number must be unique on the router. | ||
| router(config-voice-class)# signal keepalive seconds | (Optional) Configure the keepalive signaling packet interval in seconds for Cisco trunk (private line) calls. The range for seconds is 1 to 65535; the default is 5. | ||
| router(config-voice-class)# signal sequence oos {no-action | idle-only | oos-only | both}
| (Optional) Change the signaling pattern to be sent to the PBX whenever the far-end keepalive message is lost, or when AIS is received from the far end. Select no-action to send no signaling pattern. Select idle-only or oos-only to send only one signaling pattern. Select both or the no form to restore the default (both signaling patterns are sent). | ||
| router(config-voice-class)# signal pattern {idle receive | idle transmit | oos receive | oos transmit} signal-pattern
| (Optional)---Use only to override the default values for the idle patterns and receive out-of-service (OOS) pattern, or to configure an OOS transmit signaling pattern. Configure the signaling pattern (ABCD bit pattern) for Cisco trunk (private line) calls. Configure both idle receive and idle transmit for the idle state. Configure both oos receive and oos transmit for the OOS state. The receive signaling pattern is from the data network side to the PBX. The transmit signaling pattern is from the PBX to the data network side. The range for all options is 0000 to 1111. If this command is not entered, the default signal patterns are used. See the command reference for defaults. Repeat the command entry for each signal pattern required. | ||
| router(config-voice-class)# signal timing oos timeout seconds | disabled | (Optional) Do one of the following:
The range for the timeout period is 1 to 65535 seconds; the default is 30 seconds. | ||
| router(config-voice-class)# signal timing oos restart seconds | (Optional) Configure permanent voice connections to be torn down and restarted after the trunk has been OOS for a specified time. The range for the waiting time is 0 to 65535 seconds. Note This command is ineffective if signal timing oos timeout is disabled. | ||
| router(config-voice-class)# signal timing oos slave-standby seconds | (Optional) Configure a slave port to return to its initial standby state after the trunk has been OOS or a specified time. The range for the waiting time is 0 to 65535 seconds. Note This command is ineffective if signal timing oos timeout is disabled. | ||
| router(config-voice-class)# signal timing oos suppress-all | suppress-voice seconds | (Optional) Configure the router or concentrator to stop sending voice packets or voice and signaling packets to the network if it detects a transmit OOS signaling pattern from the PBX for a specified time. The range for the waiting time is 0 to 65535 seconds. Note You must also configure an OOS transmit signaling pattern with the signal pattern oos transmit command (Step 4.) | ||
| router(config-voice-class)# signal timing idle suppress-voice seconds | (Optional) Configure the router or concentrator to stop sending voice packets after the trunk has been idle for a specified time. The range is 0 to 65535 seconds. | ||
| router(config-voice-class) #exit | Exit from voice-class configuration mode. |
After you have created the voice class, assign it to a network dial peer (VoFR, VoATM, or VoIP) or to a voice port. You cannot assign voice-class signaling attributes to POTS dial peers.
To apply voice-class signaling attributes to a network dial peer, use the following commands beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| router(config)# dial-peer voice tag {vofr | voatm | voip}
|
The tag is a number that identifies the dial peer and must be unique on the router. Do not assign duplicate tag numbers. | ||
| router(config-dialpeer)# voice-class permanent tag | Assign to the dial peer the voice class that you created in the "Configuring a Voice Class to Define Trunk Conditioning Attributes" section. Note The voice-class command in dial-peer configuration mode is entered with a hyphen. The voice class command in global configuration mode is entered without the hyphen. |
To apply voice-class signaling attributes to a voice port, use the following commands beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| For Cisco MC3810 series analog voice ports: router(config)# voice-port slot/port For Cisco MC3810 series digital voice ports: router(config)# voice-port slot:ds0-group | Identify the voice port you want to configure and enter voice-port configuration mode. | ||
| router(config-voiceport)# voice-class permanent tag | Assign to the voice port the voice class that you created in the "Configuring a Voice Class to Define Trunk Conditioning Attributes" section. Note The voice-class command in voice-port configuration mode is entered with a hyphen. The voice class command in global configuration mode is entered without the hyphen. |
The following example configures a voice class using default idle and OOS signaling patterns, and configures busyout after 60 seconds to the PBX, with restart after 120 seconds. This example applies the voice class to both a Voice over Frame Relay dial peer and a Voice over ATM dial peer:
router(config)#voice class permanent 10
router(config-class)# signal keepalive 10
router(config-class)# signal timing oos timeout 60
router(config-class)# signal timing idle suppress-voice 5
router(config-class)# signal timing oos restart 120
router(config-class)# exit
router(config)# dial peer voice vofr 10
router(config-dial-peer)# voice-class permanent 10
router(config-dial-peer)# exit
router(config)# dial peer voice voatm 20
router(config-dial-peer)# voice-class permanent 10 router(config-dial-peer)# exit
The following example configures a voice class with specified signaling bit patterns for the idle receive, idle transmit, OOS receive, and OOS transmit states, and it configures busyout after 90 seconds to the PBX, with restart after 240 seconds. This example applies the voice class to digital voice port 0:5 on a Cisco MC3810:
router(config)#voice class permanent 30
router(config-class)# signal keepalive 10
router(config-class)# signal pattern idle receive 0101
router(config-class)# signal pattern idle transmit 0101
router(config-class)# signal pattern oos receive 0001
router(config-class)# signal pattern oos transmit 0001 router(config-class)# signal timing oos timeout 90
router(config-class)# signal timing idle suppress-voice 5
router(config-class)# signal timing oos restart 240
router(config-class)# exit router(config)# voice-port 0:5 router(config-voiceport)# voice-class permanent 30
To display the status of trunk-conditioning signaling and timing parameters for a voice port, enter the show voice trunk-conditioning signaling or the show voice trunk-conditioning signaling summary EXEC command.
The following is a sample display from the show voice trunk-conditioning signaling summary command for voice ports on a Cisco MC3810:
router# show voice trunk-conditioning signaling summary 1/1 is shutdown 1/4 is shutdown 1/5 : TX INFO :slow-mode seq#= 25, sig pkt cnt= 40, last-ABCD=0000 hardware-state ACTIVE signal type is NorthamericanCAS signal path is OPEN RX INFO :slow-mode, sig pkt cnt= 36, prev-seq#= 25, last-ABCD=0000
The following is a sample display from the show voice trunk-conditioning signaling command for voice port 1/5 on a Cisco MC3810:
router# show voice trunk-conditioning signaling 1/5 1/5 : TX INFO :slow-mode seq#= 25, sig pkt cnt= 42, last-ABCD=0000 hardware-state ACTIVE signal type is NorthamericanCAS signal path is OPEN 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 RX INFO :slow-mode, sig pkt cnt= 37 missing = 0, out of seq = 0, very late = 0 playout depth = 0 (ms), refill count = 1 prev-seq#= 25, last-ABCD=0000 trunk_down_timer = 4212 (ms), idle timer = 0 (sec), tx_oos_timer = 0 (sec), rx_ais_duration = 0 (ms) forced playout signal pattern = NONE signaling playout history 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
To display the status of trunk supervision and configuration parameters for a voice port, enter the show voice trunk-conditioning supervisory or the show voice trunk-conditioning supervisory summary EXEC command.
The following is a sample display from the show voice trunk-conditioning supervisory summary command for voice ports on a Cisco MC3810:
router# show voice trunk-conditioning supervisory summary 1/1 is shutdown 1/4 is shutdown 1/5 : state : TRUNK_SC_CONNECT, voice : on , signal : on ,slave
The following is a sample display from the show voice trunk-conditioning supervisory command for voice port 1/5 on a Cisco MC3810:
router# show voice trunk-conditioning supervisory 1/5 1/5 : state : TRUNK_SC_CONNECT, voice : on, signal : on, slave status: trunk connected sequence oos : idle and oos pattern :rx_idle = 0x0 rx_oos = 0xF tx_oos = 0xF timing : idle = 0, restart = 0, standby = 0, timeout = 40 supp_all = 50, supp_voice = 0, keep_alive = 5 timer: oos_ais_timer = 0, timer = 0
This section documents new or modified commands. Modified commands are indicated by an asterisk (*). All other commands used on these platforms are documented in the Cisco IOS Release 12.0 command reference publications.
To display the status of trunk-conditioning signaling and timing parameters for a voice port, use the show voice trunk-conditioning signaling EXEC command.
show voice trunk-conditioning signaling [summary | voice-port]
summary | (Optional) Show a summary of the status for all voice ports on the router or concentrator. |
voice-port | (Optional) Show a detailed report for a specified voice port. |
EXEC
| Release | Modification |
|---|---|
12.0(3)XG and 12.0(4)T | This command was introduced on the Cisco MC3810 as show voice permanent-call. |
12.0(7)XK | This command was renamed show voice trunk-conditioning signaling. |
This command displays the trunk signaling status for analog and digital voice ports on Cisco MC3810 concentrators.
The following is a sample display from the show voice trunk-conditioning signaling summary command for voice ports on a Cisco MC3810:
router# show voice trunk-conditioning signaling summary 1/1 is shutdown 1/4 is shutdown 1/5 : TX INFO :slow-mode seq#= 25, sig pkt cnt= 40, last-ABCD=0000 hardware-state ACTIVE signal type is NorthamericanCAS signal path is OPEN RX INFO :slow-mode, sig pkt cnt= 36, prev-seq#= 25, last-ABCD=0000
The following is a sample display from the show voice trunk-conditioning signaling command for voice port 1/5 on a Cisco MC3810:
router# show voice trunk-conditioning signaling 1/5 1/5 : TX INFO :slow-mode seq#= 25, sig pkt cnt= 42, last-ABCD=0000 hardware-state ACTIVE signal type is NorthamericanCAS signal path is OPEN 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 RX INFO :slow-mode, sig pkt cnt= 37 missing = 0, out of seq = 0, very late = 0 playout depth = 0 (ms), refill count = 1 prev-seq#= 25, last-ABCD=0000 trunk_down_timer = 4212 (ms), idle timer = 0 (sec), tx_oos_timer = 0 (sec), rx_ais_duration = 0 (ms) forced playout signal pattern = NONE signaling playout history 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
The following is a sample display from the show voice trunk-conditioning signaling summary command for voice ports on a Cisco 3600:
router# show voice trunk-conditioning signaling summary 2/0/0 is shutdown 2/0/1 is shutdown 3/0:0 8 is shutdown 3/0:1 1 is shutdown 3/0:2 2 is shutdown 3/0:3 3 is shutdown 3/0:5 5 is shutdown 3/0:6(6) : status : 3/0:7 7 is shutdown 3/1:0 8 is shutdown 3/1:1 1 is shutdown 3/1:3 3 is shutdown 3/1:5 5 is shutdown 3/1:7 7 is shutdown
The following is a sample display from the show voice trunk-conditioning signaling command for voice port 3/0:6 on a Cisco 3600:
router# show voice trunk-conditioning signaling 3/0:6 hardware-state ACTIVE signal type is NorthamericanCAS status : forced playout pattern = STOPPED trunk_down_timer = 0, rx_ais_duration = 0, idle_timer = 0
Table 1 explains the fields in the sample output.
| Field | Description |
|---|---|
current timer | Time since last signaling packets were received. |
forced playout pattern | Which forced playout pattern is sent to PBX:
|
hardware-state | Hardware state based on received IDLE pattern:
|
signal type | Signaling type used by lower level driver: Northamerica, MELCAS, transparent, or external. |
idle timer | Time the hardware on both sides has been in idle state. |
last-ABCD | Last received or transmitted signal bit pattern. |
max inter-arrival time | Maximum interval between received signaling packets. |
missing | Number of missed signal packets. |
mode | Signaling packet generation frequency:
|
out of seq | Number of out-of-sequence signal packets. |
playout depth | Number of packets in playout buffer. |
prev-seq# | Sequence number of previous signaling packet. |
refill count | Number of packets created to maintain nominal length of playout packet buffer. |
rx_ais_duration | Time since receipt of AIS indicator. |
seq# | Sequence number of signaling packet. |
sig pkt cnt | Number of transmitted or received signaling packets. |
signal path | Status of signaling path. |
signaling playout history | Signaling bits received in last 60 milliseconds. |
trunk_down_timer | Time since last signaling packets were received. |
tx_oos_timer | Time since PBX started sending OOS signaling pattern defined by signal pattern oos transmit. |
very late | Number of very late signaling packets. |
| Command | Description |
show dial-peer voice | Displays the configuration for all VoIP and POTS dial peers configured on the router. |
show voice dsp | Shows the current status of all DSP voice channels. |
show voice port | Displays configuration information about a specific voice port. |
show voice trunk-conditioning supervisory | Displays the status of trunk supervision and configuration parameters for voice ports. |
To display the status of trunk supervision and configuration parameters for voice ports, use the show voice trunk-conditioning supervisory EXEC command.
show voice trunk-conditioning supervisory [summary | voice-port]
summary | (Optional) Show a summary of the status for all voice ports on the router or concentrator. |
voice-port | (Optional) Show a detailed report for a specified voice port. |
EXEC
| Release | Modification |
|---|---|
12.0(7)XK | This command was introduced on the Cisco MC3810. |
This command displays the trunk supervision and configuration status for analog and digital voice ports.
The following is a sample display from the show voice trunk-conditioning supervisory summary command for voice ports on a Cisco MC3810:
router# show voice trunk-conditioning supervisory summary 1/1 is shutdown 1/4 is shutdown 1/5 : state : TRUNK_SC_CONNECT, voice : on , signal : on ,slave
The following is a sample display from the show voice trunk-conditioning supervisory command for voice port 1/5 on a Cisco MC3810:
router# show voice trunk-conditioning supervisory 1/5 1/5 : state : TRUNK_SC_CONNECT, voice : on, signal : on, slave status: trunk connected sequence oos : idle and oos pattern :rx_idle = 0x0 rx_oos = 0xF tx_oos = 0xF timing : idle = 0, restart = 0, standby = 0, timeout = 40 supp_all = 50, supp_voice = 0, keep_alive = 5 timer: oos_ais_timer = 0, timer = 0
The following is a sample display from the show voice trunk-conditioning supervisory summary command for voice ports on a Cisco 3600:
router# show voice trunk-conditioning supervisory summary 2/0/0 is shutdown 2/0/1 is shutdown 3/0:0 8 is shutdown 3/0:1 1 is shutdown 3/0:2 2 is shutdown 3/0:3 3 is shutdown 3/0:5 5 is shutdown 3/0:6(6) : state : TRUNK_SC_CONNECT, voice : on , signal : on ,master 3/0:7(7) : state : TRUNK_SC_CONNECT, voice : on , signal : on ,master 3/1:0(8) : state : TRUNK_SC_CONNECT, voice : on , signal : on ,master 3/1:1(1) : state : TRUNK_SC_CONNECT, voice : on , signal : on ,master 3/1:3(3) : state : TRUNK_SC_CONNECT, voice : on , signal : on ,master 3/1:5(5) is shutdown 3/1:7(7) is shutdown
The following is a sample display from the show voice trunk-conditioning supervisory command for voice port 3/0:6 on a Cisco 3600:
router# show voice trunk-conditioning supervisory 3/0:6 3/0:6(6) : state : TRUNK_SC_CONNECT, voice : on, signal : on, master status: trunk connected sequence oos : idle and oos pattern :rx_idle = 0x0 rx_oos = 0xF timing : idle = 0, restart = 0, standby = 0, timeout = 40 supp_all = 0, supp_voice = 0, keep_alive = 5 timer: oos_ais_timer = 0, timer = 0
Table 2 explains the fields in the sample output.
| Field | Description |
|---|---|
keep_alive | Signaling packets periodically sent to the far end, even if there is no signal change. These signaling packets function as keepalive messages. |
master | The voice port configured as connection trunk xxxx. |
slave | The voice port configured as connection trunk xxxx answer-mode. |
oos_ais_timer | Time since the signaling packet with AIS indicator was received. |
pattern | 4-bit signaling pattern. |
restart | The restart timeout after far end is OOS. |
rx-idle | The signaling bit pattern indicating that the far end is idle. |
rx-oos | The signaling bit pattern sent to the PBX indicating that the network is OOS. |
standby | The time before the slave side goes back to standby after far end goes OOS. |
supp_all | The timeout before suppressing transmission of voice and signaling packets to the far end after detection of PBX OOS. |
supp_voice | The timeout before suppressing transmission of voice packet to the far end after detection of PBX OOS. |
timeout | The timeout for non-receipt of keepalive packets before the far end is considered to be OOS. |
TRUNK_SC_CONNECT | Trunk conditioning supervisory component status. |
| Command | Description |
show dial-peer voice | Displays the configuration for all dial peers configured on the router. |
show voice dsp | Shows the current status of all DSP voice channels. |
show voice port | Displays configuration information about a specific voice port. |
show voice trunk-conditioning signaling | Displays the status of trunk-conditioning signaling and timing parameters for a voice port. |
To configure the ABCD signaling bit pattern for Cisco trunks and FRF.11 trunks, use the signal pattern voice-class configuration command. Use the no form of this command to restore the default.
signal pattern {idle receive | idle transmit | oos receive | oos transmit} bit-pattern
idle receive | Defines the signaling pattern for identifying an "idle" message from the network. and Defines the idle signaling pattern to be sent to the PBX if the network trunk is out of service and signal sequence oos idle-only or signal sequence oos both is configured. |
idle transmit | Defines the signaling pattern for identifying an "idle" message from the PBX. |
oos receive | Defines the OOS signaling pattern to be sent to the PBX if the network trunk is out of service and signal sequence oos oos-only or signal sequence oos both is configured. |
oos transmit | Defines the signaling pattern for identifying an OOS message from the PBX. |
bit-pattern | The ABCD signaling bit pattern. Values are 0000 to 1111. |
idle receive | For near-end E&M---0000 (for T1) or 0001 (for E1) For near-end FXO loop start---0101 For near-end FXO ground start---1111 For near-end FXS---0101 For near-end MELCAS---1101 |
idle transmit | For near-end E&M---0000 For near-end FXO---0101 For near-end FXS loop start---0101 For near-end FXS ground start---1111 For near-end MELCAS---1101 |
oos receive | For near-end E&M---1111 For near-end FXO loop start---1111 For near-end FXO ground start---0000 For near-end FXS loop start---1111 For near-end FXS ground start---0101 For near-end MELCAS---1111 |
oos transmit | No default signaling pattern is defined. |
Voice-class configuration
| Release | Modification |
|---|---|
12.0(3)XG and 12.0(4)T | This command was introduced on the Cisco MC3810. |
12.0(7)XK | Default signaling patterns were defined. |
This command defines the signaling patterns that are used to identify the idle and OOS states.
Before configuring the signaling pattern, you must use the voice class permanent command in global configuration mode to create a voice class for the Cisco trunk or FRF.11 trunk. After you finish defining the voice class, you will assign it to a dial peer.
To suppress voice packets whenever the transmit or receive trunk is in the idle state, use the idle receive and idle transmit commands in conjunction with the signal timing idle suppress-voice command.
To define the signaling bit patterns to be sent to the PBX when the trunk is out of service, use the idle receive and oos receive commands.
The oos receive pattern is the pattern sent to the PBX to indicate that the network trunk is out of service. The oos receive pattern is not used for pattern matching against the signaling packets received from the network.
To "busy out" a PBX if the network connection fails, set the oos receive pattern to match the seized state (busy); then set the signal timing oos timeout value. When the timeout expires and no signaling packets have been received, the router will send the idle receive and/or oos receive pattern to the PBX, depending on which pattern is specified by the signal sequence oos command.
Use the busy seized pattern only if the PBX does not have a pattern specifically intended to indicate an OOS state. If the PBX has a specific OOS pattern, use that pattern instead.
The following example restores default signaling bit patterns for the receive and transmit idle states:
router(config)#voice class permanent 10
router(config-class)# signal keepalive 3
router(config-class)# signal timing idle suppress-voice
router(config-class)# no signal pattern idle receive
router(config-class)# no signal pattern idle transmit
router(config-class)# exit router(config)# dial-peer voice 100 vofr router(config-dial-peer)# voice-class permanent 10
The following example configures non-default signaling bit patterns for the receive and transmit idle states:
router(config)#voice class permanent 10
router(config-class)# signal keepalive 3
router(config-class)# signal timing idle suppress-voice
router(config-class)# signal pattern idle receive 0101
router(config-class)# signal pattern idle transmit 0101
router(config-class)# exit router(config)# dial-peer voice 100 vofr router(config-dial-peer)# voice-class permanent 10
The following example restores default signaling bit patterns for the receive and transmit out-of-service states:
router(config)#voice class permanent 10
router(config-class)# signal keepalive 3
router(config-class)# signal timing idle suppress-voice
router(config-class)# no signal pattern oos receive
router(config-class)# no signal pattern oos transmit router(config-class)# exit router(config)# dial-peer voice 100 vofr router(config-dial-peer)# voice-class permanent 10
The following example configures non-default signaling bit patterns for the receive and transmit out-of-service states:
router(config)#voice class permanent 10
router(config-class)# signal keepalive 3
router(config-class)# signal pattern oos receive 0001
router(config-class)# signal pattern oos transmit 0001 router(config-class)# exit router(config)# dial-peer voice 100 vofr router(config-dial-peer)# voice-class permanent 10
| Command | Description |
dial-peer voice | Enters dial-peer configuration mode and specifies a dial-peer type. |
signal keepalive | Configures the keepalive signaling packet interval for Cisco trunks and FRF.11 trunks. |
Specifies which signaling pattern is sent to the PBX when the far-end keepalive message is lost or AIS is received from the far end. | |
Specifies the length of time before the router stops sending voice packets after a trunk goes into the idle state. | |
signal timing oos restart | Specifies that a permanent voice connection be torn down and restarted after the trunk has been OOS for a specified time. |
signal timing oos slave-standby | Specifies that a slave port return to its initial standby state after the trunk has been OOS for a specified time |
signal timing oos suppress-all | Configures the router or concentrator to stop sending voice and signaling packets to the network if it detects a transmit OOS signaling pattern from the PBX for a specified time. |
signal timing oos suppress-voice | Configures the router or concentrator to stop sending voice packets to the network if it detects a transmit OOS signaling pattern from the PBX for a specified time. |
signal timing oos timeout | Changes the delay time between the loss of signaling packets from the network and the start time for the OOS state. |
Specifies the length of time before voice traffic is stopped after a trunk goes into the idle state. | |
signal-type | Sets the signaling type to be used when connecting to a dial peer. |
voice class permanent | Creates a voice class for a Cisco trunk or FRF.11 trunk. |
voice-class permanent | Assigns a previously-configured voice class for a Cisco trunk or FRF.11 trunk to a dial peer. |
To specify which signaling pattern is sent to the PBX when the far-end keepalive message is lost or AIS is received from the far end, use the signal sequence oos voice-class configuration command. Use the no form of this command to restore the default value.
signal sequence oos {no-action | idle-only | oos-only | both}
no-action | No signaling pattern is sent. |
idle-only | Only the idle signaling pattern is sent. |
oos-only | Only the out-of-service (OOS) signaling pattern is sent. |
both | Both idle and OOS signaling patterns are sent. This is the default value. |
Both idle and OOS signal patterns are sent.
Voice-class configuration
| Release | Modification |
|---|---|
12.0(7)XK | This command was introduced on the Cisco MC3810. |
Before configuring the idle or OOS signal patterns to be sent, you must use the voice class permanent command in global configuration mode to create a voice class for the Cisco trunk or FRF.11 trunk. After you finish defining the voice class, you will assign it to a dial peer.
Use this command to specify which signaling pattern(s) to send. Use the signal pattern idle receive or the signal pattern oos receive command to define the bit patterns of the signaling patterns if other than the defaults.
The following example defines voice class 10, sets the signal sequence oos to send only the idle signal pattern to the PBX, and applies the voice class configuration to VoFR dial peer 100.
router(config)#voice class permanent 10 router(config-class)# signal keepalive 3
router(config-class)# signal sequence oos idle-only
router(config-class)# signal timing idle suppress-voice 5 router(config-class)# exit router(config)# dial-peer voice 100 vofr router(config-dial-peer)# voice-class permanent 10 router(config-dial-peer)# signal-type transparent
| Command | Description |
dial-peer voice | Enters dial-peer configuration mode and specifies a dial peer type. |
signal keepalive | Configures the keepalive signaling packet interval for Cisco trunks and FRF.11 trunks. |
Configures the ABCD bit pattern for Cisco trunks and FRF.11 trunks. | |
Specifies the length of time before the router stops sending voice packets after a trunk goes into the idle state. | |
signal timing oos restart | Specifies that a permanent voice connection be torn down and restarted after the trunk has been OOS for a specified time. |
signal timing oos slave-standby | Specifies that a slave port return to its initial standby state after the trunk has been OOS for a specified time |
signal timing oos suppress-all | Configures the router or concentrator to stop sending voice and signaling packets to the network if it detects a OOS signaling pattern from the PBX for a specified time. |
signal timing oos suppress-voice | Configures the router or concentrator to stop sending voice packets to the network if it detects a transmit OOS signaling pattern from the PBX for a specified time. |
signal timing oos timeout | Changes the delay time between the loss of signaling packets from the network and the start time for the OOS state. |
signal-type | Sets the signaling type to be used when connecting to a dial peer. |
voice class permanent | Creates a voice class for a Cisco trunk or FRF.11 trunk. |
voice-class permanent | Assigns a previously-configured voice class for a Cisco trunk or FRF.11 trunk to a dial peer. |
To specify the length of time before the router stops sending voice packets after a trunk goes into the idle state (no call in progress), use the signal timing idle suppress-voice voice-class configuration command. Use the no form of this command to restore the default value.
signal timing idle suppress-voice seconds
seconds | Duration of the idle state in seconds before the transmission of voice packets is stopped. The range is 0 to 65535. |
The router or concentrator continues to send voice packets when the trunk is idle.
Voice-class configuration
| Release | Modification |
|---|---|
12.0(3)XG | This command was introduced on the Cisco MC3810. |
12.0(7)XK | This command was modified to simplify the configuration process. |
Before configuring the signal timing idle suppress-voice timer, you must use the voice class permanent command in global configuration mode to create a voice class for the Cisco trunk or FRF.11 trunk. After you finish defining the voice class, you will assign it to a dial peer.
This command is used when the signal-type command is set to transparent in the dial peer for the Cisco trunk or FRF.11 trunk connection. When the router or concentrator stops sending voice packets after the specified time, signaling packets continue to be sent.
To detect an idle trunk state, the router or concentrator monitors both transmit and receive signaling for the idle transmit and idle receive signaling patterns. These can be configured by the signal pattern idle transmit or signal pattern idle receive command, or they can be the defaults. The default idle receive pattern is the idle pattern of the local voice port. The default idle transmit pattern is the idle pattern of the far-end voice port.
The following example defines voice class 10, sets the idle detection time to 5 seconds, configures the trunk to use the default transmit and receive idle signal patterns, and applies the voice class configuration to VoFR dial peer 100.
router(config)#voice class permanent 10 router(config-class)# signal keepalive 3
router(config-class)# signal timing idle suppress-voice 5 router(config-class)# exit router(config)# dial-peer voice 100 vofr router(config-dial-peer)# voice-class permanent 10 router(config-dial-peer)# signal-type transparent
| Command | Description |
dial-peer voice | Enters dial-peer configuration mode and specifies a dial peer type. |
signal keepalive | Configures the keepalive signaling packet interval for Cisco trunks and FRF.11 trunks. |
Configures the ABCD bit pattern for Cisco trunks and FRF.11 trunks. | |
Specifies which signaling pattern is sent to the PBX when the far-end keepalive message is lost or AIS is received from the far end. | |
Specifies the length of time before the router stops sending voice packets after a trunk goes into the idle state. | |
signal timing oos restart | Specifies that a permanent voice connection be torn down and restarted after the trunk has been OOS for a specified time. |
signal timing oos slave-standby | Specifies that a slave port return to its initial standby state after the trunk has been OOS for a specified time |
signal timing oos suppress-all | Configures the router or concentrator to stop sending voice and signaling packets to the network if it detects a transmit OOS signaling pattern from the PBX for a specified time. |
signal timing oos timeout | Changes the delay time between the loss of signaling packets from the network and the start time for the OOS state. |
signal-type | Sets the signaling type to be used when connecting to a dial peer. |
voice class permanent | Creates a voice class for a Cisco trunk or FRF.11 trunk. |
voice-class permanent | Assigns a previously-configured voice class for a Cisco trunk or FRF.11 trunk to a dial peer. |
This section documents new or modified commands. All other commands used on these platforms are documented in the Cisco IOS Release 12.0 command reference publications.
Use the debug vpm trunk_sc privileged EXEC command to enable the display of trunk conditioning supervisory component trace information. The no form of this command disables the display of this information.
debug vpm trunk_scThis command has no arguments or keywords.
Trunk conditioning supervisory component trace information is not displayed.
| Release | Modification |
|---|---|
12.0(7)XK | This command was introduced on the Cisco 2600, 3600, and MC3810 platforms. |
Use the debug vpm port command with the slot-number/subunit-number/port argument to limit the debug vpm trunk_sc debug output to a particular port. If you do not use the debug vpm port command, the debug vpm trunk_sc displays output for all ports.
Execution of no debug all will turn off all port level debugging. It is usually a good idea to turn off all debugging and then enter the debug commands you are interested in one by one. This will help to avoid confusion about which ports you are actually debugging.
The following example shows debug vpm trunk_sc messages for port 1/0/0 on a Cisco 2600 or 3600 series router:
router#debug vpm trunk_scrouter#debug vpm port 1/0/0
The following example shows debug vpm trunk_sc messages for port 1/1 on a Cisco MC3810:
router#debug vpm trunk_scrouter#debug vpm port 1/1
The following example turns off debug vpm trunk_sc debugging messages:
router# no debug vpm trunk_sc
| Command | Description |
debug vpm all | Enables all VPM debugging |
debug vpm port | Limits the debug vpm trunk_sc command to a specified port. |
show debug | Shows which debug commands are enabled. |
Posted: Thu Feb 3 14:30:34 PST 2000
Copyright 1989 - 2000©Cisco Systems Inc.