![Cisco BTS 10200 Softswitch Troubleshooting Manual Download Page 460](http://html.mh-extra.com/html/cisco/bts-10200-softswitch/bts-10200-softswitch_troubleshooting-manual_67550460.webp)
10-92
Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
OL-8723-19
Chapter 10 Signaling Troubleshooting
Signaling Events and Alarms
SIGNALING (177)
To monitor and correct the cause of the event, refer to the
“ISDN Unable to Restore D-Channel Into
In-Service Active State—Signaling (177)” section on page 10-126
.
DESCRIPTION
ISDN Unable to Restore D-Channel into In-Service Active State
SEVERITY
WARNING
THRESHOLD
100
THROTTLE
0
DATAWORDS
D-Chan ID - STRING [20]
D-Chan Index - FOUR_BYTES
D-Chan Type - STRING [10]
PRIMARY
CAUSE
The BTS 10200 does not receive the Service Ack from the remote end in response to Service message
to make the D-Channel active.
PRIMARY
ACTION
Verify that the NFAS provisioning at the PBX/media gateway is correct.