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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 Maintenance Release 1.1 and Later
MGCP Message Sent and Is Unsuccessful
If the BTS 10200 sends an MGCP message to the MGW, and the message is unsuccessful (no ACK
received), the KA process is expedited even though the next KA attempt is scheduled for a later time.
This condition is shown in
.
Figure B-22
MGW Reachable with No Stable Calls, and MGCP Message Unsuccessful
25002
8
Time
Time
An MGCP message is sent and
is
un
s
ucce
ss
ful
(no ACK received).
The next scheduled KA
attempt is expedited.
KA 1
KA 2
KA
3
KA 4
KA 5
KA 6
KA 7
2x
x
x
8
x
4x
2x
x
4x
KA
8
x = provisioned value of
mgcp-keepalive-interval
(default = 60 seconds)