Cisco WS-X4604-GWY - VoIP Gateway Especificaciones Pagina 217

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10-15
Cisco IP Telephony Network Design Guide
78-11103-03
Chapter 10 Migrating to an IP Telephony Network
Reference Models for Migration Configurations
The following list summarizes the pros and cons of the type B system:
Detailed Discussion of Model C
Figure 10-8 shows the topology for model C, which includes a PBX and voice
messaging, with extra SMDI and analog links from the voice messaging system
directly to the IP network.
Figure 10-8 Model CPBX and Voice Messaging System with Separate Links to
the IP Network
The considerations for telephony features for model C are the same as for
model A.
Pros Cons
IP users get access to voice
messaging as they migrate from
the PBX.
Relatively inexpensive to
implement
Same voice feature shortfall as
type A systems
No MWI support for IP users
Workaround entails administration
complexity and possibly PBX
hardware.
PSTN
PBX LAN
Migration
Voice
messaging
system
V
V
IP
IP
IP
SMDI
Analog
40841
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