Appendix B: Integrating Cisco Unified Communications Manager and Cisco Unified SRST to Use Cisco Unified SRST
Information About Using Cisco Unified SRST Gateways as a Multicast MOH Resource
285
Cisco Unified SCCP and SIP SRST System Administrator Guide
OL-13143-04
Figure 2
IP Address and Port Usage for G.711 and G.729 Configuration
Figure 1
and
Figure 2
show all branches using Cisco Unified SRST multicasting MOH.
Figure 3
shows
a case in which some gateways are configured with Cisco Unified SRST and other gateways are not.
When the central site and Branch 3 phone users are put on hold by other IP phones in the Cisco Unified
CM system, MOH is originated by Cisco Unified CM. When Branch 1 and Branch 2 phone users are put
on hold by other phone users in the Cisco Unified CM system, MOH is originated by the Cisco Unified
SRST gateways.
116828
WAN
IP
V
Branch 2 place
s
Branch 1 on hold (G.711 i
s
u
s
ed).
239.1.1.1 port 16384
Branch 1
IP
V
Branch 2
WAN
IP
V
Branch 2 take
s
Branch 1 off hold (G.729 i
s
u
s
ed).
10.1.1.1 port 1000
Branch 1
IP
V
Branch 2
WAN
IP
V
Branch 1 call
s
Branch 2 (G.729 i
s
u
s
ed).
10.1.1.1 port 1000
Branch 1
IP
V
Branch 2
