Troubleshooting guide

3-48
Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
OL-0800-14
Chapter 3 Cisco PGW 2200 Softswitch Platform Operations
Regular Operations
When the D-channel is associated with an FAS signaling path, the system returns a message like the
following:
Media Gateway Controller 2000-03-26 20:26:18
M RTRV
"dchan-1:fas1,LID=0:IS"
;
In this response, fas1 is the signaling path, or a logical grouping of D-channels (equivalent to a linkset).
The LID is the line identifier, or the logical line ID of the D-channel within the signaling path (equivalent
to the SLC in SS7). IS is the primary service state of the D-channel.
When the D-channel is associated with an NFAS signaling path, the system returns a message like the
following:
Media Gateway Controller 2000-03-26 20:26:18
M RTRV
"dchan-1:nfas1,LID=0:PRI,backup=dchan-2:STBY"
;
In this response, nfas1 is the signaling path, or a logical grouping of D-channels (equivalent to a linkset).
The LID is the line identifier, or the logical line ID of the D-channel within the signaling path (equivalent
to the SLC in SS7). The next field indicates whether the specified D-channel is the primary (PRI)
channel or the standby (STBY). Finally, the backup field specifies the MML name of the D-channel that
is configured as the backup to the specified D-channel. This field is displayed only when a backup
D-channel has been provisioned. For information on provisioning backup D-channels, see the Cisco
PGW 2200 Softswitch Release 9.8 Provisioning Guide.
To retrieve the service state for all of the D-channels, log in to the active Cisco PGW 2200 Softswitch,
start an MML session, and enter the rtrv-dchan:all command:
The system returns a message like the following, which shows the signaling links to and from the Cisco
PGW 2200 Softswitches and the associated media gateways (different solutions might use different
media gateways).
Media Gateway Controller 2000-03-26 19:23:23
M RTRV
"dchan1:nfas1,LID=0:IS"
"dchan2:nfas1,LID=1:IS"
"dchan3:fas1,LID=0:IS"
The valid service states for a D-channel are identical to the primary service state listings for signaling
channels, as found in the “Managing Signaling Channels” section on page 3-42. If the link is in any other
state than IS, attempt to bring the linkset into service, as described in the “Setting the Service State of a
D-channel” section on page 6-106.
Retrieving the State of SS7 Signaling Services
To retrieve the current state for an SS7 signaling service, log in to the active Cisco PGW 2200
Softswitch, start an MML session, and enter the rtrv-spc:ss7_sig_srv command:
Where SS7_sig_srv is the MML name for the associated SS7 signaling service.
The system returns a response like the following:
MGC-01 - Media Gateway Controller 2001-06-12 16:10:21
M RTRV
"ss7sigsrv1:DPC=244.001.041,DNW=2:OPC=244.001.005:AOOS"
To retrieve the current state for all of your SS7 signaling services, log in to the active Cisco PGW 2200
Softswitch, start an MML session, and enter the rtrv-spc:all command: