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This appendix contains details on the Service Expansion Shelf cabling. It includes the following sections:
 |
Note In all cable references, the transmit direction is away from the switch, and the receive direction is towards the switch. |
A trunk cable connects each T3 port on the BNC-2T3 back card to a T3 port on other equipment. Refer to Table B-1 and Table B-2 for details.
| Cable Parameter | Description |
|---|---|
Type: | 75-ohm coax cable (RG-59 B/U for short runs, AT&T 734A for longer runs). Two per T3 line (XMT and RCV). |
Max. Length: | 450 feet maximum between the SES and other equipment. |
Connector: | Terminated in male BNC; Rx is received from trunk, Tx is transmitted to trunk. |
| Connector | Description |
|---|---|
Rx BNC | Receive T3 from trunk |
Tx BNC | Transmit T3 to trunk |
Trunk cables connect the customer DSX-1 cross-connect point or T1 Channel Service Unit (CSU) to the SES at the T1 back card. Refer to Figure B-1 and Table B-3 for details.
| Cable Parameter | Description |
|---|---|
Cable Type: | Western Electric 22 AWG, ABAM individually shielded twisted pair |
Cable Connector: | RJ-48C male. (Figure B-1 illustrates the RJ-48 connector pin out.) |
Max. Cable Length: | 655 ft. (199.664 m) maximum between the SES node and the first repeater or CSU. Selection of cable length equalizers. |
| Pin No. | Description |
|---|---|
1 | Transmit Tip |
2 | Transmit Ring |
3 | Transmit Shield |
4 | Receive Tip |
5 | Receive Ring |
6 | Receive Shield |
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Note Transmit direction is towards the T1 trunk. |
E1 trunk cables connect the customer DSX-1 cross-connect point or E1 Channel Service Unit (CSU) to the node at the FRSM E1 back card (SMB-8E1). Refer to Table B-4 and Table B-5.
| Cable Parameter | Description |
|---|---|
Cable Type: BNC-8E1 | 75-ohm coax cable for unbalanced connection. Two cables/pairs (1 transmit, 1 receive) per E1 line. |
Cable Connector: | 16 female SMB for unbalanced connection. Refer to Tables A-2 and A-3 for pinouts. |
Max. Cable Length: | Approximately 100 meters maximum between the SES node and the first repeater or CSU. Equalizer for cable length. |
| Connector | Description |
|---|---|
Rx BNC | Receive E1 from trunk |
Tx BNC | Transmit E1 to trunk |
The High Speed Serial Interface (HSSI) port connects through a female SCSI-II connector This connector accords with ANSI/TIA/EIA-613. Refer to Table B-6 for the pinouts.
| Pin No. | Name | Signal Function | Polarity | Signal Source |
|---|---|---|---|---|
11 | SD | Send Data | + | DTE |
36 |
|
| - |
|
4 | RD | Receive Data | + | DCE |
29 |
|
| - |
|
6 | ST | Send Timing | + |
|
31 |
|
| - |
|
2 | RT | Receive Timing | + |
|
27 |
|
| _ |
|
6 | TT | Terminal Timing | + | DCE |
13 |
|
| - |
|
3 | CA | DCE Available | + | DCE |
28 |
|
| - |
|
8 | TA | DTE Available | + | DTE |
33 |
|
| - |
|
10 | LA | Loop Ckt A | + | DTE |
35 |
|
| - |
|
12 | LB | Loop Ckt B | + | DTE |
37 |
|
| - |
|
5 | LC | Loop Ckt C | + | DCE |
30 |
|
| - |
|
1,26,7,32,13,38,19,44,25,50 | SG | Signal Ground |
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DC Power connections are made to the DC Power Entry Modules at the rear of the SES. Refer to Table B-7 and Table B-8 for acceptable cable and wire types. Cisco normally does not provide wiring for DC-powered systems. Refer to Table B-7 for details on DC wiring.
| Cable Parameter | Description |
|---|---|
Wiring: | Three conductor, 10 AWG recommended wire gauge, min. 60ºC insulation rating, copper conductors only. Solid or stranded wires. Wire insulation stripped back 0.25" (6 mm) at the SES connector end. |
Connection: | EURO Block. |
Either Cisco Systems or the customer can provide the AC power cord. See Table B-8 for the power cords that Cisco can supply. In addition, you can special-order AC cables with other plugs or different lengths. If you want to construct the power cord, it must mate with an IEC320 (C-14) 10/15A male receptacle on the back of the AC power module.
| Cable Parameter | Description |
|---|---|
Cable: | Provided with 8 feet (2.3 m) of 3-conductor wire with plug. |
Plug: customer end | 20 A NEMA L620, 3-prong plug (domestic U.S.) |
This section describes the cables that can connect to the PXM-UI card.
The Maintenance (or Modem) port and the Control (or Console) port connect an SES to an ASCII terminal, workstation, or modem for remote alarm reporting or system monitoring. Refer to Table B-9 for a description of the cabling and Table B-10 for the pinout of the associated RJ-45 connector.
| Cable Parameter | Description |
|---|---|
Interface: | EIA/TIA-232---both are DTE ports. |
Suggested Cable: | 24 AWG, 8-wire. A straight-through EIA/TIA-232 cable provides a terminal or printer connection. For an interface with modems on either port, a null modem cable may be necessary. |
Cable Connector: | RJ-45, subminiature, male. Table B-10 contains a list of the port pin assignments. |
Max. Cable Length: | 50 feet (15 m) |
| Pin No. | Name | Description |
|---|---|---|
1 | RTS out | Request to Send |
2 | DTR out | Data Terminal Ready |
3 | TxD | Transmit Data |
4 | GND | Chassis ground |
5 | GND | Chassis ground |
6 | RxD | Receive Data |
7 | DSR | Data Set Ready |
8 | CTS | Clear to Send |
The SES has two external clock input connectors: a T1 RJ-45 connector or and E1 SMB connector..
The clock port can accept a T1 or E1 BITS clock input.
The external alarm cable connects to the Alarm connector on the PXM-UI card. See Table B-11 for physical characteristics of the cable and Table B-12 for the pinouts.
| Cable Parameter | Description |
|---|---|
Interface: | Dry-contact relay closure. |
Wire: | 24 AWG, shielded, 6-pair. |
Connector: | DB-15, Subminiature, male. |
| Pin No. | Alarm | Description |
|---|---|---|
1 | Audible---Major | Normally open |
2 |
| Common |
9 |
| Normally closed |
4 | Visual---Major | Normally open |
5 |
| Common |
12 |
| Normally closed |
7 | unused | n.c. |
8 | unused | n.c. |
3 | Audible---Minor | Normally open |
11 |
| Common |
10 |
| Normally closed |
6 | Visual---Minor | Normally open |
14 |
| Common |
13 |
| Normally closed |
15 | unused | n.c. |
Posted: Thu Mar 30 19:23:34 PST 2000
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