AT&T DS1/DMi/ISDN-PRI manual 4SAMPLE Installation and Maintenance Problems, Type

B-4SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS

CHANNEL 1 CHANNEL 2

CHANNEL 13

CHANNEL 14

LOCATION	A					LOCATION B
DS1							DS1
INTERFACE							INTERFACE
5/0		TYPE	36	TYPE	75		5/0	CHANNEL	1
6/0							6/0	CHANNEL	2
			TRANSMISSION	FACILITY
							0/0	CHANNEL	13
0/0	TYPE		75	TYPE	36
1/0							1/0	CHANNEL	14

Figure B-3.

Incorrect Assignment

of Trunks

LOCATION

A

LOCATION B

DS1

DS1

INTERFACE

INTERFACE

CHANNEL

1

5/0

TYPE

75

......................

TYPE

75

5/0

CHANNEL

1

CHANNEL

2

6/0

6/0

CHANNEL

2

TRANSMISSION FACILITY

CHANNEL

13

0/0

CHANNEL

13

TYPE

36

......................

TYPE

36

0/0

CHANNEL

14

1/0

1/0

CHANNEL

14

Figure B-4.Correct Assignment of Trunks

Figure B-1,Incorrect Translations (Procedure 260), is an extreme case for this type of problem. A more likely scenario for the problem would be for the trunk assignments to be off by one or two channels, causing from two to four trunks to fail.

When using CEMs (such as the BCM32000) and CDMs in a DS1/DMI network of System 85s and System 75s, you must strictly adherence to the rules for administering procedure 260 and procedure 116.

NOTE: Due to the increased complexity of engineering networks using CEMs and CDMs, all installations using these transmission products are currently engineered by the Regional Engineering Centers (REC) or National Engineering Center (NEC). It is the responsibility of