Cisco Systems MGX 8230 External Alarm Cabling, External Clock Input Cabling, T1 Clock Cabling

Appendix B Cable Specifications

External Alarm Cabling

Table B-14 RJ-45 Maintenance and Control Port Pin Assignments

Pin No.	Name	Description
1	RTS out	Request to Send
2	DTR out	Data Terminal Ready
3	TxD	Transmit Data
4	GND	Signal Ground
5	GND	Signal Ground
6	RxD	Receive Data
7	DSR	Data Set Ready
8	CTS	Clear to Send

External Clock Input Cabling

The MGX 8230 has two external clock input connectors: a T1 RJ-45 connector and E1 SMB connector.

T1 Clock Cabling

The clock port can accept a T1 or E1 BITS clock input. (See Table B-15)

Table B-15 7T1 Clock Cabling

Pin No.

1

2

3

4

5

6

7

8

Name

Tx ring out

Tx tip out

Ground

Rx ring in

Rx tip in

No comment

Test point ring out

Test point tip out

External Alarm Cabling

The external alarm cable connects to the Alarm connector on the PXM-UI card. See Table B-16for physical characteristics of the cable and Table B-17for the pinouts.

Table B-16 External Alarm Cabling

Cable Parameter	Description
Interface	Dry-contact relay closure.

	Cisco MGX 8230 Edge Concentrator Installation and Configuration
B-8	Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001