|
|
This feature allows V.110 calls to be originated and terminated over ISDN. The V.110 recommendation of the ITU-T rate adapts a low speed connection to an ISDN-B channel allowing the remote station or terminal adaptor to use the fast call set-up times offered by ISDN. This feature enables GSM wireless connectivity.
This document describes the Cisco IOS commands and AT commands required to support V.110 on MICA modems for AS5X00 Access Servers.
This MICA V.110 implementation supports 60 modems per board on the Cisco AS5300 and supports other connect standards (V.34, V.90, etc.) in addition to V.110. Modems are not dedicated to V.110 only and are allocated dynamically. On the Cisco AS5200, 30 modems per board is supported and 72 modems per board is supported on the Cisco AS5800.
This V.110 implementation for calls on MICA modems are managed by special boardware and modem code, along with the appropriate Cisco IOS image, in a manner similar to other modulation standards.
V.110 is a digital link access protocol and for Cisco access servers. It operates over an ISDN B channel. V.110 enables Cisco access servers to connect to ISDN terminal adapters requiring V.110 compatibility. This feature enables GSM wireless connectivity.
This ISDN feature is in addition to the existing analog capability of the MICA modems.
Also, some digital cellular networks support data applications via V.110 connecting from the cell phone. These networks place these V.110 calls on the PSTN for interconnecting to the ISP of the end-customer's choice. MICA V.110 supports data rates from 600 bps up to 38,400bps.
Cisco IOS show commands have been changed to display additional fields reflecting the V.110 capability. See the "Command Reference" section.
An added AT command, ATDI, allows the user to command a V.110 modem to originate a V.110 call. See the "Command Reference" section.
This basic feature allows a V.110 call to be originated and terminated. Synchronous V.110 is not supported. In addition, V.110 calls must terminate on a TTY asynchronous IOS interface.
The following V.110 bearer rates and intermediate rates (ITU-T Recommendation Q.931) are supported:
This feature requires special modem code to be downloaded to the MICA Modems. See the online CCO modem information page.
See the modem code online documentation for the platform you are using:
See also the following documents:
Supporting boardware and modem code on the MICA modems and special versions of the CSM on certain platforms. See Firmware and Portware Information, under the "Related Documents" section.
The current Modem Management MIB objects for MICA modems will also be used for V.110. One minor change is in the SNMP agent code. This change returns the correct modulation type for V.110 when it does a look up of the modulation for MICA modems.
Boardware--- | Software that runs on the CPU on the certain supporting cards |
CSM--- | Call Switching Module |
E1--- | European equivalent of T1, 32 channels of 64KHz, 1 for framing, 1 for signaling |
GSM--- | Global System for Communications |
HMM--- | Hex Modem Module |
IOS--- | Internetworking Operating System |
ISDN--- | Integrated Services Digital Network |
LLC--- | Link Layer Control |
MICA--- | Modem ISDN Channel Aggregation |
MSM--- | Modem State Machine |
Portware--- | Software that runs on MICA digital modem module |
PRI--- | Primary Rate Interface |
Q.931--- | ISDN User-Network Interface Layer 3 Specification for Basic Call Control |
T1--- | North American Channelized TDM w/ 24 channels of 64Khz each plus 8Khz frame |
TA--- | Terminal Adapter |
V.110--- | ITU-T Standard for support by ISDN of Data Terminal Equipment with V-Series Type Interfaces |
There are no configuration tasks. All commands in this feature are modified existing show modem commands.
This section documents modified commands. All other commands used with this feature are documented in the Cisco IOS Release 12.0 command references and the Cisco AS5800 online new feature documentation. For more information, see the documentation for the existing show modem commands.
No new IOS commands are being added to support V.110 on MICA. However, due to the new V.110 Connect Protocol, Connected Standard, Line Speeds (Bearer Rates) and counters, the code that handles the following show modem commands has been modified as listed in the following logical order:
For the commands above, MICA Modem Management code has been modified to display the correct information for V.110 associated Connect Protocol and Connected Standard. In addition, the correct line speeds for V.110 related Bearer Rates have also be added to commands that display the information.
For other and related modem management commands, such as modem-at mode, see:
The show modem command includes outputs for the show modem configuration command and the show modem connect-speeds command.
Fields that have been added or changed for this command are:
Modem Type V.110 Protocol: ISDN Mode Connection Speeds 34000
The show modem command example is as follows:
router# show modem 1/0
Mdm Typ Status Tx/Rx G Duration RTS CTS DCD DTR
1/0 V.110 Conn 9600/9600 0 10:12:19 x x x x
Modem 1/0, Mica Hex Modem (Managed), Async1, TTY1
Firmware Rev: 2.7.0.6
Modem config: Incoming and Outgoing
Protocol: ISDN Mode, Compression: None
Management config: Status polling
RX signals: 0 dBm
Last clearing of "show modem" counters never
23 incoming completes, 2 incoming failures
0 outgoing completes, 0 outgoing failures
0 failed dial attempts, 0 ring no answers, 2 busied outs
0 no dial tones, 0 dial timeouts, 0 watchdog timeouts
0 no carriers, 0 link failures, 0 resets, 0 recover oob
0 recover modem, 0 current fail count
0 protocol timeouts, 0 protocol errors, 0 lost events
0 ready poll timeouts
Transmit Speed Counters:
Connection Speeds 75 300 600 1200 2400 4800
# of connections 0 0 0 0 0 1
Connection Speeds 7200 9600 12000 14400 16800 19200
# of connections 1 4 0 3 0 8
Connection Speeds 21600 24000 26400 28000 28800 29333
# of connections 0 0 0 0 0 0
Connection Speeds 30667 31200 32000 33333 33600 34000
# of connections 0 0 0 0 0 0
Connection Speeds 34667 36000 37333 38000 38400 38667
# of connections 0 0 0 0 6 0
Connection Speeds 40000 41333 42000 42667 44000 45333
Receive Speed Counters:
Connection Speeds 75 300 600 1200 2400 4800
# of connections 0 0 0 0 0 1
Connection Speeds 7200 9600 12000 14400 16800 19200
# of connections 1 4 0 3 0 8
Connection Speeds 21600 24000 26400 28000 28800 29333
# of connections 0 0 0 0 0 0
Connection Speeds 30667 31200 32000 33333 33600 34000
# of connections 0 0 0 0 0 0
Connection Speeds 34667 36000 37333 38000 38400 38667
# of connections 0 0 0 0 6 0
Connection Speeds 40000 41333 42000 42667 44000 45333
# of connections 0 0 0 0 0 0
Connection Speeds 46000 46667 48000 49333 50000 50667
# of connections 0 0 0 0 0 0
Connection Speeds 52000 53333 54000 54667 56000
# of connections 0 0 0 0 0
Fields that have been added or changed for this command are:
Parameter #1 Connect Protocol: ISDN Mode Parameter #8 Connected standard V.110 Parameter #41 V110 frames received bad: Parameter #42 V110 frames received good: Parameter #43 V110 frames transmitted: Parameter #44 V110 sync lost:
The show modem operational-status command example is as follows:
router# show modem operational-status 1/0
Modem(1/0) Operational-Status:
Parameter #0 Disconnect Reason Info: (0x0)
Type (=0 ): <unknown>
Class (=0 ): Other
Reason (=0 ): no disconnect has yet occurred
Parameter #1 Connect Protocol: ISDN Mode
Parameter #2 Compression: None
Parameter #3 EC Retransmission Count: 0
Parameter #4 Self Test Error Count: 0
Parameter #5 Call Timer: 37079 secs
Parameter #6 Total Retrains: 0
Parameter #7 Sq Value: 7
Parameter #8 Connected Standard: V.110
Parameter #9 TX,RX Bit Rate: 9600, 9600
Parameter #11 TX,RX Symbol Rate: 0, 0
Parameter #13 TX,RX Carrier Frequency: 0, 0
Parameter #15 TX,RX Trellis Coding: (n/a), (n/a)
Parameter #16 TX,RX Preemphasis Index: 0, 0
Parameter #17 TX,RX Constellation Shaping: (n/a), (n/a)
Parameter #18 TX,RX Nonlinear Encoding: (n/a), (n/a)
Parameter #19 TX,RX Precoding: (n/a), (n/a)
Parameter #20 TX,RX Xmit Level Reduction: 0, 0 dBm
Parameter #21 Signal Noise Ratio: 0 dB
Parameter #22 Receive Level: 0 dBm
Parameter #23 Frequency Offset: 0 Hz
Parameter #24 Phase Jitter Frequency: 0 Hz
Parameter #25 Phase Jitter Level: 0 degrees
Parameter #26 Far End Echo Level: 0 dBm
Parameter #27 Phase Roll: 0 degrees
Parameter #28 Round Trip Delay: 0 msecs
Parameter #30 Characters transmitted, received: 247, 308
Parameter #32 Characters received BAD: 0
Parameter #33 PPP/SLIP packets transmitted, received: 9, 9
Parameter #35 PPP/SLIP packets received (BAD/ABORTED): 0
Parameter #36 EC packets transmitted, received OK: 0, 0
Parameter #38 EC packets (Received BAD/ABORTED): 0
Parameter #39 Robbed Bit Signalling (RBS) pattern: 0
Parameter #40 Digital Pad: (n/a), Digital Pad Compensation: None
Parameter #41 V110 frames received bad: 0
Parameter #42 V110 frames received good: 7417301
Parameter #43 V110 frames transmitted: 7417310
Parameter #44 V110 sync lost: 0
Fields that have been added or changed for this command are:
Connect Protocol: ISDN Mode Connected Standard V.110 V110 frames received bad: V110 frames received good: V110 frames transmitted: V110 sync lost:
The show modem log command example is as follows:
router# show modem log 1/1
Modem 1/1 Events Log:
...
...
...
4d06h :Modem State event:
State: Train Up
4d06h :Modem State event:
State: EC Negotiating
4d06h :Modem State event:
State: Steady
4d06h :RS232 event: RTS, DTR, CTS, DCD
4d06h :Static event:
Connect Protocol: ISDN Mode
Compression: None
Connected Standard: V.110
TX,RX Symbol Rate: 0, 0
TX,RX Carrier Frequency: 0, 0
TX,RX Trellis Coding: (n/a), (n/a)
Frequency Offset: 0 Hz
Round Trip Delay: 2 msecs
TX,RX Bit Rate: 19200, 19200
Robbed Bit Signalling (RBS) pattern: 0
Digital Pad: (n/a), Digital Pad Compensation: None
4d06h :Dynamic event:
Sq Value: 7
Signal Noise Ratio: 0 dB
Receive Level: 0 dBm
Phase Jitter Frequency: 0 Hz
Phase Jitter Level: 0 degrees
Far End Echo Level: 0 dBm
Phase Roll: 0 degrees
Total Retrains: 0
EC Retransmission Count: 0
Characters transmitted, received: 0, 0
Characters received BAD: 0
PPP/SLIP packets transmitted, received: 0, 0
PPP/SLIP packets received (BAD/ABORTED): 0
EC packets transmitted, received OK: 0, 0
EC packets (Received BAD/ABORTED): 0
V110 frames received bad: 0
V110 frames received good: 51
V110 frames transmitted: 64
V110 sync lost: 0
...
...
...
1d11h :Modem State event:
State: Terminate
1d11h :RS232 event: RTS, DTR, CTS, noDCD
1d11h :Modem State event:
State: Idle
1d11h :End Connect event:
Call Timer: 87 secs
Disconnect Reason Info: (0xDF06)
Type (=6 ): Tx (host to line) data flushing - OK
Class (=31): Requested by host
Reason (=6 ): network indicated disconnect
Total Retrains: 0
EC Retransmission Count: 0
Characters transmitted, received: 308, 50042
Characters received BAD: 0
PPP/SLIP packets transmitted, received: 10, 43
PPP/SLIP packets received (BAD/ABORTED): 0
EC packets transmitted, received OK: 0, 0
EC packets (Received BAD/ABORTED): 0
V110 frames received bad: 3
V110 frames received good: 34493
V110 frames transmitted: 34710
V110 sync lost: 1
...
...
...
10:37:18:Static event:
Connect Protocol: ISDN Mode
Compression: None
Connected Standard: V.110
TX,RX Symbol Rate: 0, 0
TX,RX Carrier Frequency: 0, 0
TX,RX Trellis Coding: (n/a), (n/a)
Frequency Offset: 0 Hz
Round Trip Delay: 2 msecs
TX,RX Bit Rate: 9600, 9600
Robbed Bit Signalling (RBS) pattern: 0
Digital Pad: (n/a), Digital Pad Compensation: None
10:37:20:Dynamic event:
Sq Value: 7
Signal Noise Ratio: 0 dB
Receive Level: 0 dBm
Phase Jitter Frequency: 0 Hz
Phase Jitter Level: 0 degrees
Far End Echo Level: 0 dBm
Phase Roll: 0 degrees
Total Retrains: 0
EC Retransmission Count: 0
Characters transmitted, received: 0, 0
Characters received BAD: 0
PPP/SLIP packets transmitted, received: 0, 0
PPP/SLIP packets received (BAD/ABORTED): 0
EC packets transmitted, received OK: 0, 0
EC packets (Received BAD/ABORTED): 0
V110 frames received bad: 0
V110 frames received good: 26
V110 frames transmitted: 33
V110 sync lost: 0
...
...
...
1d06h :End Connect event:
Call Timer: 105 secs
Disconnect Reason Info: (0xDF06)
Type (=6 ): Tx (host to line) data flushing - OK
Class (=31): Requested by host
Reason (=6 ): network indicated disconnect
Total Retrains: 0
EC Retransmission Count: 0
Characters transmitted, received: 247, 307
Characters received BAD: 0
PPP/SLIP packets transmitted, received: 9, 9
PPP/SLIP packets received (BAD/ABORTED): 0
EC packets transmitted, received OK: 0, 0
EC packets (Received BAD/ABORTED): 0
V110 frames received bad: 3
V110 frames received good: 20758
V110 frames transmitted: 20995
V110 sync lost: 1
The calling user can manually communicate with a V.110 modem in order to originate a remote V.110 dialout from the called modem. The AT command set now includes the ATDI command (place V.110 call) to allow a V.110 call to be originated from the called modem. The user enters the ATDI command after establishing a session with the MICA modem in order to dial-out a V.110 call from the modem.
By specifying a value 8 in S29, the user causes the remote modem to implicitly assume that a V.110 connection is to be established. This command indicates that an ISDN call is being requested, and when used with the S29=8 command, results in modem code issuing a ISDN_DIALSTRING (0x45) request being made to the host.
After entering the S29=8 command, you can enter the desired user rate if different from the default value of 9600 bps. This command takes the form: S57=speed. For supported rates, see the "Restrictions" section. For example:
S57=19200
There are no debug commands specific to this feature. Existing ISDN debug commands can be used.
router# debug isdn q931 router# debug modem csm router# term mon
router# debug isdn q931 router# debug csm router# term mon
Posted: Fri Jun 11 20:42:47 PDT 1999
Copyright 1989-1999©Cisco Systems Inc.