Cisco Cisco TelePresence Management Suite (TMS) Version 15 Maintenance Manual
IP Zones
An IP zone performs two roles:
■
Creating the idea of locality in an IP network.
■
Providing information for connecting from the IP network using gateways and URI dialing.
IP zones are purely logical entities and do not necessarily map to physical boundaries of network segments. Cisco
TMS uses IP zones to determine which systems can be considered local or close to each other. This affects, for
example, the choice of an MCU, where a local MCU may be preferred. IP zones also provide gateway and dialing
information about the network a system is attached to. If an organization does not have widespread IP connectivity
between sites and prefers to use ISDN when making certain connections, IP zones also provide controls for this. For
more information see
TMS uses IP zones to determine which systems can be considered local or close to each other. This affects, for
example, the choice of an MCU, where a local MCU may be preferred. IP zones also provide gateway and dialing
information about the network a system is attached to. If an organization does not have widespread IP connectivity
between sites and prefers to use ISDN when making certain connections, IP zones also provide controls for this. For
more information see
IP-ISDN-IP Calls
These calls run through two different gateways and may have lower connect success rate and lower quality com
pared to other calls. Due to the reduced call quality, IP-ISDN-IP calls will be the lowest priority call route.
pared to other calls. Due to the reduced call quality, IP-ISDN-IP calls will be the lowest priority call route.
Between systems with no ISDN bandwidth, however, IP-ISDN-IP calls may be the only call alternative.
When placing a call between two systems in different IP Zones where Prefer ISDN over IP calls to these IP Zones is
defined and neither system has ISDN bandwidth, Allow IP-ISDN-IP must be enabled for the zone for Cisco TMS to
allow these IP calls by connecting the call through the ISDN Gateway defined in the zone. Without enabling this set
ting, the call will not be allowed in Cisco TMS.
defined and neither system has ISDN bandwidth, Allow IP-ISDN-IP must be enabled for the zone for Cisco TMS to
allow these IP calls by connecting the call through the ISDN Gateway defined in the zone. Without enabling this set
ting, the call will not be allowed in Cisco TMS.
Prerequisite
To use IP-ISDN-IP routing in Cisco TMS, your ISDN gateway must be configured to use * as a TCS-4 delimiter. This is
the default setting on many gateways, but may need to be modified or set up on some.
the default setting on many gateways, but may need to be modified or set up on some.
For more information about TCS-4 dialing, see your ISDN gateway's documentation.
Setting up an IP Zone
When setting up an IP zone, you specify which prefixes to dial in order to use a gateway. By specifying the prefix
rather than the gateway directly, Cisco TMS is given the flexibility to use load-balanced gateways, and even gate
ways not supported by Cisco TMS.
rather than the gateway directly, Cisco TMS is given the flexibility to use load-balanced gateways, and even gate
ways not supported by Cisco TMS.
1.
Go to
Administrative Tools > Locations > IP Zones
.
2.
Click New.
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Cisco TelePresence Management Suite Administrator Guide
Routing