DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures

9-948ISDN-SGR (ISDN-PRI Signaling Group)

9
System Technician-Demanded T ests: Descripti ons
and Error Codes

Always investigate tests in the order p resented in the table below when

inspecting errors in the sys tem. By clearing error cod es associated with the

Primary Signaling Link Hardware Check

, for example, you may also clear errors

generated from other tests in the testing sequence.
3909 A request to use a network
service has been made,
but the network has
rejected the request
because the requested
service is not implement ed.
Follow the recommendations list ed above for Error Type
3890.
3928 A call was denied because
of a basic incompatibility
between the type of call
and either the facilities
selected by the routing
pattern or the called user
itself.
This error might be helpfu l as a clue if the customer
complains of rec eiving unexpected intercept tone after
accessing ISDN trunks or PRI endpoints. Determine the
trunk group from the circuit pack and p ort number (in the
aux data field) and then check the BCC fields of the
pertinent routing patterns. Also, investigate whether or not
the calling and called endpoints are c ompatible (for
example, some ISDN switches may not allow a voice station
to call a data extensio n).
Order of Investigation Short Test
Sequence Long Test
Sequence D/ND1
1. D = Destructive; ND = Nondestruc tive
Primary Signaling Link Hardware Check (#636) X X ND
Secondary Signaling Link Hardware Check (#639) X X ND
Layer 2 Status Test (#647) X X ND
Remote Layer 3 Query Test (#637) X X ND
Table 9-362. Descriptions and Recommendations for Error Types 3840-3928 — Continued
Error
Code Description Recommendation
Continued on next page