Nortel Networks DCT1900 manual Sdb

Technical Product Manual - DCT1900

Maintenance, Fault Finding Procedures

B

Fault 37?

No

Check air interface

sync provider

Out of order

or reset?

No

Check sync input

cable connection at

CPU and SDB.

Yes

Yes

No multiframe synchronization

yError in MS/PBX Digital Trunk Controller

yExcessive noise on trunk cabling

Fault 41

System is not synchronized and when the air interface sync provider is up and running:

yWait until synchronization is acheived (might take a while) or

yForce synchronization by system reset (ongoing calls are dropped)

Connection		y	Sync input cable
	No
			connection
correct?
		y	SDB

Yes

CPU

Maint-DCT1900/R8/mw	6-5
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