Cisco WS-X4604-GWY - VoIP Gateway Especificaciones descargar pdf (Pagina 168)

Chapter 7 Multisite WAN with Centralized Call Processing

Dial Plan Considerations

7-6

Cisco IP Telephony Network Design Guide

78-11103-03

Intercluster Calls

Intercluster calls are made using H.323 and can use alternative routing, including

routing calls to the PSTN. Between clusters connected over a WAN, a gatekeeper

is required for call admission control. The issues with intercluster calls are

covered in greater detail in Chapter 6, “Multisite WAN with Distributed Call

Processing.” See also Figure 3-11.

Local PSTN Calls

Each site can dial a single number to access the local PSTN. The same code can

be used for PSTN access, and, based upon the partition and calling search space,

a local gateway is selected.

Design Example

In the network depicted in Figure 7-3, the desired operation is to permit all users

to call each other within the cluster and also to permit a subset of the users to make

PSTN calls. The text following Figure 7-3 explains how to achieve this.

1 2 ... 163 164 165 166 167 168 169 170 171 172 173 ... 261 262

Sin comentarios

Cisco WS-X4604-GWY - VoIP Gateway Especificaciones Pagina 168