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This appendix provides details on the cabling required to install the MGX 8220 shelf.
Trunk cables connect the T3 port on the BNM backcard to the BNI T3 port on the collocated
BPX node. Refer to Table A-1 and Table A-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 max. between the BPX switch and the MGX 8220 shelf. |
Connector: | Terminated in male BNC; Rx is receive from trunk, Tx is transmit to trunk. |
Connector | Description |
---|---|
Rx BNC | Receive T3 from trunk |
Tx BNC | Transmit T3 to trunk |
The IMATM backcard can have eight RJ-48 connectors or eight SMB connectors. Connections are made through short pigtail cables, two adapter cables, and two Y-cables for use with redundant IMATM cards. (See Figure A-1.)
Trunk cables connect the customer DSX-1 crossconnect point or T1-E1 Channel Service Unit to the MGX 8220 node at the FRSM T1 back card (DB15-4T1). Refer to Table A-3 and Table A-4 for details.
Cable Parameter | Description |
---|---|
Cable Type: | Western Electric 22 AWG, ABAM individually shielded twisted pair |
Cable Connector: | Male DB-15 subminiature. |
Max. Cable Length: | 533 ft. (162 m) maximum between the MGX 8220 shelf and the first repeater or CSU. Selection of cable length equalizers. |
Pin No. | Description |
---|---|
1 | Transmit, Tip |
2 | Transmit Pair Shield |
3 | Receive, Tip |
4 | Receive Pair Shield |
9 | Transmit, Ring |
11 | Receive, Ring |
E1 trunk cables connect the customer DSX-1 crossconnect point or E1 Channel Service Unit to the MGX 8220 node at the FRSM E1 back card (BNC-4E1). (See Table A-5 and Table A-6.)
Cable Parameter | Description |
---|---|
Cable Type: BNC-4E1 | 75-ohm coax cable for unbalanced connection. Two cables/pairs (1 transmit, 1 receive) per E1 line. |
Cable Connector: | Two female BNC for unbalanced connection; male DB15 for balanced connection. Refer to Table A-2 and Taable A-3 for pinouts. |
Max. Cable Length: | Approximately 100 meters maximum between the MGX 8220 shelf and the first repeater or CSU. Equalizer for cable length. |
Connector | Description |
---|---|
Rx BNC | Receive E1 from trunk |
Tx BNC | Transmit E1 to trunk |
E1 trunk cables connect the customer DSX-1 crossconnect point or E1 Channel Service Unit to the MGX 8220 node at the FRSM E1 back card (DB15-4E1). Refer to Table A-7 and Table A-8.
Cable Parameter | Description |
---|---|
Cable Type: Db15-4E1 | Western Electric 22 AWG, ABAM individually shielded twisted pair |
Cable Connector: | Male DB-15 subminiature. |
Max. Cable Length: | 533 ft. (162 m) maximum between the MGX 8220 shelf and the first repeater or CSU. Selection of cable length equalizers. |
Pin No. | Description |
---|---|
1 | Transmit, Tip |
2 | Transmit Pair Shield |
3 | Receive, Tip |
4 | Receive Pair Shield |
9 | Transmit, Ring |
11 | Receive, Ring |
DC Power connections are made to the DC Power Entry Modules at the rear of the MGX 8220 shelf. (See Figure A-2.) Refer to Table A-9 and Table A-10 for acceptable cable and wire types.
DC wiring is generally provided by the customer. (Refer to Table A-9.)
Cable Parameter | Description |
---|---|
Wiring: | Three conductor, 12 AWG recommended wire gauge, 75ºC insulation rating, copper conductors only. Solid or stranded wires. Wire insulation stripped back 0.25" (6mm) at the MGX 8220 shelf connector end. |
Connection: | EURO Block. |
AC power cables may be provided by the customer or ordered from Cisco. Several standard cables are available. (Refer to Table A-10.) AC cables with other plugs or different lengths may be special ordered. For users who wish to construct their own power cables, the cable must mate with an IEC320 16/20A female receptacle on the rear 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) |
The control ports are used to connect one of the nodes in the network to a control terminal, workstation, or modem connections for remote alarm reporting or system monitoring. Refer to Table A-11 and Table A-12 for details on these cables.
Cable Parameter | Description |
---|---|
Interface: | RS-232 DCE ports. |
Suggested Cable: | 24 AWG, 25-wire. A straight-through RS-232 cable is used for a terminal or printer connection. A null modem cable may be needed when interfacing with modems on either port. |
Cable Connector: | DB-25, subminiature, male. Table A-12 contains a list of the port pin assignments. |
Max. Cable Length: | 50 feet (15 m) |
Pin No. | Name | Source | Description |
---|---|---|---|
1 | FG | both | Frame Ground |
2 | TxD | DTE | Transmit Data |
3 | RxD | DCE | Receive Data |
4 | RTS | DTE | Request to Send |
5 | CTS | DCE | Clear to Send |
6 | DSR | DCE | Data Set Ready |
7 | SG | both | Signal Ground |
8 | CD | DCE | Carrier Detect |
181 | LL | DTE | Local loop |
20 | DTR | DTE | Data Term Ready |
211 | RL | DTE | Remote loop |
221 | RI | DCE | Ring indicator |
1Used on control port cable only. |
Figure A-3 shows a modem cable that is used for connecting modems to the MGX 8220 control and maintenance ports.
The external clock input cable connects the external clock inputs through the T3E3-D and T3E3-B EXT. TMG. connectors. The clock may be 1.544 Mbps for T3E3-D or 2.048 Mbps for T3E3-D. Refer to Table A-13 through Table A-16.
Cable Parameter | Description |
---|---|
Cable Type: | Western Electric 22 AWG, ABAM individually shielded twisted pair (100 ohm balanced). One pair per T1 line (1 receive). |
Cable Connector: | Male DB-15 subminiature. Refer to Table A-14 for pinouts. |
Max. Cable Length: | 533 ft. (162 m) maximum between the MGX 8220 shelf and the first repeater or CSU. Selection of cable length equalizers is used. Wire buildout is required. |
Pin No. | Description |
---|---|
1 |
|
2 | Transmit Pair Shield |
3 | Receive, Tip |
4 | Receive Pair Shield |
9 |
|
11 | Receive, Ring |
Cable Parameter | Description |
---|---|
Cable Type: BNC-4E1 | 75-ohm coax cable for unbalanced connection. One cable pair (1 receive) per E1 clock input. |
Cable Connector: | One female BNC for unbalanced connection; male DB15 for balanced connection. |
Max. Cable Length: | Approximately 100 meters maximum between the MGX 8220 shelf and the first repeater or CSU. Equalizer for cable length. |
Connector | Description |
---|---|
Rx BNC | Receive E1 from trunk |
This cable is for connecting network alarm outputs to the LM-BNM ALARM OUTPUT connector only. (Refer to Table A-17.)
Cable Parameter | Description |
---|---|
Interface: | Dry-contact relay closure |
Wire: | 24 AWG, shielded, 6-pair |
Connector: | DB-15, Subminiature, male |
Table A-18 lists the pinouts for the network alarm outputs.
Pin No. | Alarm | Description |
---|---|---|
1 | AudibleMajor | Normally open |
2 |
| Common |
9 |
| Normally closed |
4 | VisualMajor | Normally open |
5 |
| Common |
12 |
| Normally closed |
7 | unused | n.c. |
8 | unused | n.c. |
3 | AudibleMinor | Normally open |
11 |
| Common |
10 |
| Normally closed |
6 | VisualMinor | Normally open |
14 |
| Common |
13 |
| Normally closed |
15 | unused | n.c. |
Table A-19 lists the various cables that may be ordered directly from Cisco. Cable lengths are specified as a suffix to the model number. For example 5610-50 indicates a 50 foot cable. Cables are generally available in standard lengths of 10 ft. (3 m), 25 ft. (7.6 m), 50 ft. (15 m), 75 ft. (22.8 m), and 100 ft. (30 m). Lengths of 101 ft. (30 m) to 600 ft. (183 m) are available on a special order.
When a cable is connectorized, the connector gender (male-female) will be indicated as well as the number of pins. For example RS-232/M25-M25 indicates a cable terminated with a male DB25 at both ends.
Model No. | Description | Usage |
---|---|---|
T3-E3-10 | 75 | T3 or E3 trunk interface |
5620 | RS-232/M25-F25 | Control port to control terminal, StrataView, or ext. window device |
5621 | RS-232/M25-M25 special | Control or maintenance port to modem |
5601 | Ground cable | DC |
5670 | Molex-pigtail | DC |
5671 | Spade lug-pigtail | DC |
The redundancy cables are a special "Y" cable available from Cisco. They are required for redundant trunk and data interfaces. Table A-20 lists the Y-cables used with various MGX 8220 back cards.
Y- Cable | Used On | P/N |
---|---|---|
T3 trunk | T3E3-D | T3-E3-Y |
Posted: Mon Jan 15 22:02:18 PST 2001
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