ISDN-SGR demand test descriptions and error codes

Last Updated : Feb 03, 2015 |

Investigate tests in the order presented. By clearing errors associated with the first test, errors generated from other tests may also be cleared. Click on the link to see the full description of the test, error codes, and recommended actions.

Order of investigation

Short test sequence

Long test sequence

D or ND

Primary Signaling Link Hardware Check 636

X

X

ND

Secondary Signaling Link Hardware Check 639

X

X

ND

Layer 2 Status Query Test 647

X

X

ND

Remote Layer 3 Query 637

X

X

ND