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The Cisco AS5800 universal access server supports channelized T1 (CT1) and channelized E1 (CE1) ingress interfaces that provide a synchronous telecommunications interface in both North American and international environments. The CT1 or CE1 trunk card is installed in the Cisco 5814 dial shelf in the Cisco AS5800.
This chapter explains how to remove and replace a CT1 or CE1 trunk card in the Cisco 5814 dial shelf chassis. It also includes steps for verifying and troubleshooting your CT1 or CE1 trunk card installation.
Channelized ingress interfaces reside on either CT1 or CE1 trunk cards that are installed in the Cisco 5814 dial shelf. A CT1 or CE1 trunk card contains all necessary functionality to terminate incoming telephone calls. The channelized trunk card is configured in the factory for either T1 or E1 framing, depending on your order.
Figure 2-1 shows the CT1 and CE1 trunk card components.

The CT1 and CE1 trunk cards perform the following functions:
Figure 2-2 shows two CT1 or CE1 trunk cards installed in a fully configured Cisco 5814 dial shelf chassis.

All Cisco AS5800 access server trunk cards use the same transmit clock. This clock can originate from several sources, which are as follows:
Clocks are prioritized by slot number (slots 0 to 5). The highest-priority clock is selected from the card in slot 0 and used as the default clock. If this clock fails, the highest-priority clock from the card in slot 1 becomes the default clock, and so forth.
The trunk card then forwards the clocks to the dial shelf controller. The dial shelf controller selects the highest-priority clock as the system primary clock, and the rest of the clocks remain in a prioritized backup queue.
Instead of using the default algorithm for clock selection, you can specify clocks through global configuration and select a maximum of two clocks per trunk card.
If you configure fewer than two clocks on a trunk card and all other configured clocks fail, clock selection resorts to the default algorithm on that card and the second clock will be selected automatically.
The CT1 and CE1 trunk card front panels are designed with LED indicators (Figure 2-3) and a liquid crystal display (LCD) (Figure 2-4) to provide trunk card status and port-level monitoring information.
There are two types of LEDs for the T1 and E1 trunk cards:
All LEDs are visible from the front panel. (See Figure 2-3.)
Table 2-1 lists the CT1 and CE1 trunk card LEDs and their functions.
| LED | Color | Description |
|---|---|---|
PWR | Green | Power---Lights when 5V power is active. |
MAINT | Yellow | Maintenance---Lights when there are no active calls on the card and you have completed a card-level software busyout. Indicates that the card is ready to be removed. |
E1FR | Green | E1 framing---E1 trunk card only. Lights when the card is configured for E1 framing. |
T1FR | Green | T1 framing---T1 trunk card only. Lights when the card is configured for T1 framing. |
HCPU | Green | Host CPU---Lights when the host CPU is operating normally. |
FCPU | Green | Framer CPU---Lights when the framer CPU is operating normally. |
The CT1 and CE1 trunk card front panels are designed with an LCD to provide trunk card status and port-level monitoring information. (See Figure 2-4.) The current port number displayed in the LCD corresponds to the four port-associated LEDs.
Table 2-2 describes the port-associated LEDs and their functions.
| LED | Color | Description |
|---|---|---|
LALM | Yellow | Local alarm---Lights when an alarm condition is detected on incoming data. |
RALM | Yellow | Remote alarm---Lights when the associated E1 port has detected loss of signal (LOS) or out-of-frame (OOF) errors. This occurs when the remote LIU1 receives errors and sends a signal to indicate the presence of remote errors. |
75 | Green | Ohm---E1 trunk card only. ON indicates 75 ohms, and OFF indicates 120 ohms. |
NLOOP | Yellow | Network loopback---Lights when the port is configured in network loopback. This is useful for testing purposes. |
| 1LIU = line interface unit (analog physical interface). Refers to circuitry that interfaces a serial communications circuit to a transmission medium such as coaxial cabling. |
Passive port monitoring is supported through two shared bantam jacks located at the bottom of the trunk card front panel. (See Figure 2-4.) The bantam jacks allow you to connect a network monitoring device to the trunk card to detect T1 or E1 errors.
The four-character LCD indicates which line is to be monitored or inspected using the bantam jacks.
To enable the bantam jacks for port monitoring, follow these steps:
Step 1 Push and quickly release the monitor button below the LCD to toggle to the port number you want to monitor.
You must release the button within two seconds to advance through the port numbers (from 0 to 11). After port 11, the display returns to port 0. As you advance through the port numbers, the LEDs reflect configuration status and alarm conditions for the port number displayed in the LCD.
Step 2 Push and hold the monitor button for two or more seconds to enable the bantam jack. To disable the bantam jack and return to toggle mode, press the button again and hold it for two or more seconds.
When you release the button, the port LCD no longer toggles through the port numbers, the letter "B" is displayed in the LCD, and the bantam jacks are enabled.
Step 3 Repeat Step 1 and Step 2 to enable the bantam jacks for each port you want to monitor.

Table 2-3 lists the CT1 and CE1 trunk card specifications.
| Description | Specification |
|---|---|
Dimensions H x W x L | 15.4 x .08 x 18.7 in. (39.12 x .203 x 47.5 cm) without the carrier |
Weight | 8 lb (3.6 kg) |
Transmission bit rate | |
| 1.544 Mbps |
Power requirements | 48 VDC (power consumption: 3.3 VDC and 5 VDC) |
Regulatory compliance and safety1 | |
| AT&T Accunet TR 62411 specifications; JATE2 T98-6304-0; Pan-Euro CE-0168-X |
| 1See also the regulatory compliance and safety document that shipped with your Cisco AS5800. 2JATE = Japan Approval Telecommunication Equipment. |
The CT1 trunk card receives and transmits 1.544-Mbps signals through a 100-ohm cable, using common RJ-45 connectors. Use a straight-through RJ-45 to RJ-45 cable to connect the T1 lines to an RJ-45 receptacle.
The CE1 trunk card receives and transmits 2.048-Mbps CE1 signals through either 120-ohm or 75-ohm coaxial cable. All CE1 interface cables use common RJ-45 connectors on the dial shelf end.
The receive impedance is software configurable as 75 ohms or 120 ohms. The T1 default value is 100 ohms. The E1 default value is 120 ohms. Use the line termination {75-ohm | 120-ohm} command in controller configuration mode to configure the receive impedance.
Table 2-4 lists the CT1 and CE1 port pinouts.
| Pin | Signal |
|---|---|
1 | Receive tip |
2 | Receive ring |
3 | Jumpered ground |
4 | Transmit tip |
5 | Transmit ring |
6 | Jumpered ground |
7 | Not used |
8 | Not used |
![]() | Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone network voltage (TNV) circuits. LAN ports contain SELV circuits and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information that accompanied this device. |
One interface cable is available from Cisco Systems for connecting the CT1 card ports. The cable is described in Table 2-5.
| Cable Description | Product Number |
|---|---|
RJ-45 to bare wire, 100-ohm | CAB-T1-RJ45BARE |
Figure 2-5 shows the CT1 interface cable, and Table 2-6 describes the pinouts for the CT1 interface cable.
| RJ-45 Pin | Signal | Description | Direction | Bare |
|---|---|---|---|---|
Shield | Ground | Braid |
|
|
J1-1 | RX Tip | Twisted Pair #1 | <--- | WIRE-1 |
J1-2 | RX Ring | Twisted Pair #1 | <--- | WIRE-2 |
J1-3 | RX Shield |
|
|
|
J1-4 | TX Tip | Twisted Pair #2 | ---> | WIRE-3 |
J1-5 | TX Ring | Twisted Pair #2 | ---> | WIRE-4 |
J1-6 | TX Shield |
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|
|
Seven interface cables are available from Cisco Systems for connecting the CE1 card ports. These cables and their product numbers are listed in Table 2-7, along with the number of the figure and table detailing their pinouts.
| Cable Description | Product Number | Illustration | Pinout |
|---|---|---|---|
RJ-45 to RJ-45, 120-ohm | CAB-E1-RJ45RJ45 | ||
RJ-45 to DB-15, 120-ohm | CAB-E1-RJ45DB15 | ||
RJ-45 to DB-15 null, 120-ohm | CAB-E1-RJ45DB15N | ||
RJ-45 to BNC, 75-ohm | CAB-E1-RJ45BNC | ||
RJ-45 to Twinax, 75-ohm | CAB-E1-RJ45TWIN | ||
RJ-45 to RJ-45 TE, 120-ohm | CAB-E1-RJ45TE | ||
RJ-45 to RJ-45 NT, 120-ohm | CAB-E1-RJ45NT |

| RJ-45 Pin | Signal | Description | Direction | RJ-45 T1 Pin |
|---|---|---|---|---|
Shield | Ground | Shell/Braid |
| Shield |
J1-1 | RX Tip | Twisted Pair #1 | <--- | J2-1 |
J1-2 | RX Ring | Twisted Pair #1 | <--- | J2-2 |
J1-3 | RX Shield |
|
|
|
J1-4 | TX Tip | Twisted Pair #2 | ---> | J2-4 |
J1-5 | TX Ring | Twisted Pair #2 | ---> | J2-5 |
J1-6 | TX Shield |
|
|
|

| RJ-45 Pin | Signal | Description | Direction | DB-15 Pin |
|---|---|---|---|---|
Shield | Ground | Shell/Braid |
| Shell |
J1-1 | RX Tip | Twisted Pair #1 | <--- | J2-3 |
J1-2 | RX Ring | Twisted Pair #1 | <--- | J2-11 |
J1-3 | RX Shield | Twisted Pair #3 |
| J2-4 |
J1-4 | TX Tip | Twisted Pair #2 | ---> | J2-1 |
J1-5 | TX Ring | Twisted Pair #2 | ---> | J2-9 |
J1-6 | TX Shield | Twisted Pair #4 |
| J2-2 |
| RJ-45 Pin | Signal | Description | Direction | DB-15 Pin |
|---|---|---|---|---|
Shield | Ground | Shell/Braid |
| Shell |
J1-1 | RX Tip | Twisted Pair #1 | <--- | J2-1 |
J1-2 | RX Ring | Twisted Pair #1 | <--- | J2-9 |
J1-3 | RX Shield | Twisted Pair #3 |
| J2-2 |
J1-4 | TX Tip | Twisted Pair #2 | ---> | J2-3 |
J1-5 | TX Ring | Twisted Pair #2 | ---> | J2-11 |
J1-6 | TX Shield | Twisted Pair #4 |
| J2-4 |

| RJ-45 Pin | Signal | Description | Direction | BNC Pin |
|---|---|---|---|---|
Shield | Ground | Shell |
| RX, TX Shields |
J1-1 | RX Tip | Twisted Pair #1 | <--- | RX-Tip |
J1-2 | RX Ring | Twisted Pair #1 | <--- | RX-Shield |
J1-3 | RX Shield | Twisted Pair #3 |
| RX-Shield |
J1-4 | TX Tip | Twisted Pair #2 | ---> | TX-Tip |
J1-5 | TX Ring | Twisted Pair #2 | ---> | TX-Shield |
J1-6 | TX Shield | Twisted Pair #4 |
| TX-Shield |

| RJ-45 Pin | Signal | Description | Direction | Twinax Pin |
|---|---|---|---|---|
Shield | Ground | Shell |
| RX, TX Shields |
J1-1 | RX Tip | Twisted Pair #1 | <--- | RX-1 |
J1-2 | RX Ring | Twisted Pair #1 | <--- | RX-2 |
J1-3 | RX Shield | Twisted Pair #3 |
| RX Shield |
J1-4 | TX Tip | Twisted Pair #2 | ---> | TX-1 |
J1-5 | TX Ring | Twisted Pair #2 | ---> | TX-2 |
J1-6 | TX Shield | Twisted Pair #4 |
| TX Shield |

| RJ-45 Pin | Signal | Description | Direction | RJ-45 TE Pin |
|---|---|---|---|---|
Shield | Ground | Shell/Braid |
| Shield |
J1-1 | RX Tip | Twisted Pair #1 | <--- | J2-1 |
J1-2 | RX Ring | Twisted Pair #1 | <--- | J2-2 |
J1-3 | RX Shield | Twisted Pair #3 |
| J2-3 |
J1-4 | TX Tip | Twisted Pair #2 | ---> | J2-4 |
J1-5 | TX Ring | Twisted Pair #2 | ---> | J2-5 |
J1-6 | TX Shield | Twisted Pair #4 |
| J2-6 |
| RJ-45 Pin | Signal | Description | Direction | Signal | RJ-45 NT Pin |
|---|---|---|---|---|---|
Shield | Ground | Shell/Braid |
| Ground | Shield |
J1-1 | RX Tip | Twisted Pair #1 | <--- | TX Tip | J2-4 |
J1-2 | RX Ring | Twisted Pair #1 | <--- | TX Ring | J2-5 |
J1-3 | RX Shield | Twisted Pair #3 |
| TX Shield | J2-6 |
J1-4 | TX Tip | Twisted Pair #2 | ---> | RX Tip | J2-1 |
J1-5 | TX Ring | Twisted Pair #2 | ---> | RX Ring | J2-2 |
J1-6 | TX Shield | Twisted Pair #4 |
| RX Shield | J2-3 |
![]() | Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone network voltage (TNV) circuits. LAN ports contain SELV circuits and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information that accompanied this device. |
The CT1 and CE1 trunk cards provide 12 RJ-45 receptacles for T1 or E1 lines. To connect T1or E1 lines, follow these steps:
Step 1 Attach the RJ-45 end of the T1 or E1 cable directly to the RJ-45 receptacle on the trunk card. (See Figure 2-11.)
Step 2 For T1 cabling, attach the network end of your CT1 cables to your external network.
Step 3 For E1 cabling, attach the network end of your CE1 cables to your network termination (NT1) device.
![]() | Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone network voltage (TNV) circuits. LAN ports contain SELV circuits and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information that accompanied this device. |
When you configure your CT1 trunk cards, you must include the length of the cable connected to the card. To specify this length, use the cablelength command. No cablelength command is required for CE1 trunk cards.
If you change the cable length when installing and cabling a new trunk card, you need to specify cable length in your software configuration. The cablelength command is designed to recognize two settings:
Cable length short defines the length of the cable (in feet) between your network access server (NAS) and your repeater. The cablelength short command includes the following settings:
Cable length long defines the length range between your NAS and your repeater in gain and pulse. The cablelength long command includes the following gain and pulse settings:
To configure cable length, you must be in global configuration mode. Table 2-15 lists commands to help you configure your CT1 lines using the cablelength command.
| Step | Command | Description | ||
|---|---|---|---|---|
|
| Enter the enable command. Enter your password. You are in privileged EXEC mode when the prompt changes to | ||
|
| Enter global configuration mode by typing the configure terminal command. The example uses the terminal configuration option. You are in global configuration mode when the prompt changes to | ||
|
| Enter controller configuration mode by typing controller t1 to configure your controller port. The controller ports are labeled shelf/slot/0 through shelf/slot/11 on the T3 cards. | ||
| AS5800-1(config-controller)#
[or]
AS5800-1(config-controller)# | Enter the controller cablelength short value (133, 266, 399, 533, or 655).
Enter the controller cablelength long value using gain 26 or gain 36 and pulse (-15, -22.5, -7.5, or 0). |
This completes the trunk card installation procedure. To verify the installation, proceed to the following section, "Verifying and Troubleshooting the Installation."
When you first power ON your Cisco AS5800 access server, all LEDs light while the system runs a series of diagnostics. After the system passes initial diagnostics, all LEDs go off. The LEDs then light again as described in Table 2-1.
To complete the installation, verify that the trunk card LEDs operate properly by observing the following LED states:
![]() | Tips For further installation troubleshooting information, refer to the Cisco AS5800 Universal Access Server Hardware Installation Guide. |
The Cisco 5814 dial shelf recognizes CT1 and CE1 trunk cards only in slots 0 to 5 within the dial shelf chassis. Therefore, install trunk cards only in one of the first six slots.
If you are replacing a dial shelf card by installing a new dial shelf card of the same type in the same slot, the system software recognizes the new dial shelf card interfaces and brings them up automatically. No additional configuration is needed.
If you are installing a trunk card in a different slot than the trunk card that you just removed, additional configuration is needed. Refer to the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide to configure the CT1 and CE1 interfaces. The Cisco AS5800 Universal Access Server Software Installation and Configuration Guide will be replaced by the Cisco AS5800 Universal Access Server Operation, Administration, Maintenance, and Provisioning Guide, available later this year.
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Posted: Thu Jun 22 16:34:16 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.