B-27
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-19
MGW Reachable with Stable Calls, and MGCP Message Unsuccessful
250025
KA 1
KA 2
KA
3
KA 5
KA 6
KA 7
Time
Repeating time intervals with
no MGCP command activity:
mgcp-keepalive-interval
(default = 60 seconds)
Time
KA 4
An MGCP message is sent and
is
un
s
ucce
ss
ful
(no ACK received).
The next scheduled KA
attempt is expedited.
Repeating time intervals with
no MGCP command activity:
mgcp-keepalive-interval
(default = 60 seconds)
