B-9
Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
OL-8723-19
Appendix B System Usage of MGW Keepalive Parameters, Release 5.0
Keepalive for Release 5.0 Prior to Maintenance Release 1.1
Keepalive Process
This section describes the keepalive (KA) process. The BTS 10200 performs KA attempts to determine
whether a MGW should be considered to be in
working status
or
down status
.
There are three KA scenarios covered in this section:
•
•
Scenario 2 (Special Case)—Reachable RGW with 16 or Fewer Endpoints and No Stable Calls In
Progress
•
Note
The following sections refer to two types of MGWs, residential gateways (RGWs) and trunking
gateways (TGWs). A MGW is identified as either a RGW or TGW according to the provisioning of the
type
token in the
mgw
table (
type=rgw
or
type=tgw
).
Scenario 1—MGW Reachable
This scenario applies to the following types of MGWs (when the MGWs are reachable):
•
Trunking gateways (TGWs), with or without stable calls in progress
•
Residential gateways (RGWs) with more than 16 endpoints, with or without stable calls in progress
•
RGWs with 16 or fewer endpoints and with stable call(s) in progress
Three variations of this scenario are described in this section:
•
•
MGCP Message Sent and Is Unsuccessful
•
