Cisco WS-X4604-GWY - VoIP Gateway Especificaciones descargar pdf (Pagina 204)

Chapter 10 Migrating to an IP Telephony Network

PBX and Voice Messaging Interfaces and Protocols

10-2

Cisco IP Telephony Network Design Guide

78-11103-03

Figure 10-1 Closed Versus Open Protocols in a Voice Network

PBX and Voice Messaging Interfaces and Protocols

When an IP network is introduced into this environment, the users on the IP

network generally can use IP features when calling other IP network users.

Similarly, PBX users can use the features provided by the PBX when calling other

PBX users. However, calls between IP and PBX users can use only a subset of the

features provided by each system, and that subset is defined by the level of

complexity of the voice interface between the IP network and the PBX. Similarly,

IP network users can access a voice messaging system behind the PBX, but

usually with a reduced set of features. If IP messaging is used, you might be able

to network it with the conventional voice messaging system to some degree. The

level of feature support for all these functions is defined by the protocols and

interfaces by which the IP network can connect to the conventional voice network.

Table 10-1 summarizes some of the more commonly used interfaces and protocols

for PBX and voice mail system networking.

Legacy PBX

Voice

mail

system

Proprietary voice mail networking

Proprietary CCS

Voice

mail

system

Legacy PBX

Networked

voice mail

Proprietary

voice mail/PBX

interconnect

Proprietary

voice mail/PBX

interconnect

40834

1 2 ... 199 200 201 202 203 204 205 206 207 208 209 ... 261 262

Sin comentarios

Cisco WS-X4604-GWY - VoIP Gateway Especificaciones Pagina 204