Cisco BTS 10200 Troubleshooting Manual page 819

Appendix B System Usage of MGW Keepalive Parameters, Release 5.0
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-6 MGW Reachable with Stable Calls, and MGCP Message Unsuccessful
KA 1 KA 2
Repeating time intervals with
no MGCP command activity:
mgcp-keepalive-interval
(default = 60 seconds)
OL-8723-19
Figure
An MGCP message is sent and
is unsuccessful (no ACK received).
KA 3
The next scheduled KA
attempt is expedited.
KA 4 KA 5
Repeating time intervals with
no MGCP command activity:
mgcp-keepalive-interval
(default = 60 seconds)
Keepalive for Release 5.0 Prior to Maintenance Release 1.1
B-6.
KA 6 KA 7
Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
Time
Time
B-11