Cisco Cisco TelePresence Management Suite (TMS) Version 15 Maintenance Manual
Protocols and call control
Both IP and ISDN are supported in Cisco TMS, as is interconnection between the two.
IP
In a modern Cisco telepresence deployment there are two call control solutions: you can choose either Cisco
TelePresence VCS or Cisco Unified Communications Manager.
TelePresence VCS or Cisco Unified Communications Manager.
Their respective capabilities are listed below:
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Cisco TelePresence VCS
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SIP registrar
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H.323 gatekeeper
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can route calls to a Cisco Unified CM
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Cisco Unified Communications Manager
l
SIP only
l
can trunk calls to a Cisco VCS
For further information on configuring Cisco VCS see:
To configure Cisco VCS with Cisco Unified CM see:
Cisco TMS also supports legacy call control systems:
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TANDBERG Gatekeeper
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TANDBERG Border Controller
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Some third party gatekeepers
Your choice of call control solution will dictate how Cisco TMS routes scheduled calls. For example, for
systems registered to Cisco Unified CM, Cisco TMS will assume that the system can only use SIP.
systems registered to Cisco Unified CM, Cisco TMS will assume that the system can only use SIP.
ISDN
Cisco TMS supports:
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ISDN networks and configuring a dial plan.
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mixed networks and can route ISDN - > IP and IP -> ISDN.
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endpoints that have both IP and ISDN capability.
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connections between IP sites over ISDN.
How call protocols are prioritized
By default Cisco TMS prioritizes H.323 over SIP, and IP over ISDN. You can use zones to specify whether
Cisco TMS prioritizes IP or ISDN, see
Cisco TMS prioritizes IP or ISDN, see
Cisco TMS Administrator Guide (14.3.2)
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Routing
Protocols and call control