Cisco Cisco TelePresence Video Communication Server Expressway
Advanced configuration
Cisco VCS Deployment Guide: CUCM v6.1, 7 and 8 with Cisco VCS X7.1 using a SIP trunk
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Advanced configuration
CUCM SIP Max Incoming Message Size
SIP messages for video are considerably larger than SIP messages for audio calls. In particular, when
a Cisco TelePresence Server is used in the video network, SIP messages can be > 5,000 bytes
(which is the default SIP Max Incoming Message Size configured in CUCM).
a Cisco TelePresence Server is used in the video network, SIP messages can be > 5,000 bytes
(which is the default SIP Max Incoming Message Size configured in CUCM).
To increase the SIP Max Incoming Message Size, on CUCM:
1. Go to
System > Service Parameters
.
2. Select the appropriate server.
3. Select Cisco CallManager (Active) as the service.
4. Select Advanced.
5. In the Clusterwide Parameters (Device – SIP) configure the field as follows:
SIP Max Incoming Message Size
12000
6. Click Save.