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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
MGCP Message Sent and Is Successful
If the BTS 10200 sends an MGCP message to the MGW, and the message is successful (an ACK is
received), the system restarts the keepalive timer. This condition is shown in
.
Figure B-10
MGW Reachable with No Stable Calls, and MGCP Message Successful
Scenario 3—MGW Unreachable
This scenario applies to residential gateways (RGWs) and trunking gateways (TGWs). The following
conditions are described:
•
KA Attempts Unsuccessful, MGW Unreachable, and Stable Call Is Present
•
KA Attempts Unsuccessful, MGW Unreachable, and No Stable Calls Present
•
MGW Unreachable, New Call Termination Attempt Occurs
250029
Time
Time
An MGCP message is sent and
is
s
ucce
ss
ful
(ACK is received).
KA 1
KA 2
KA
3
KA 4
KA 5
KA 6
KA 7
x
x = provisioned value of
mgcp-keepalive-interval
(default = 60 seconds)
The system restarts
the keepalive timer
2x
x
8
x
4x
2x
x
4x