Information Technology Reference
In-Depth Information
If there are multiple locations (or will be in the future), a multi-site deployment may be a
better choice; although users can call across the IP WAN to check or leave voice messages
(or use other features) in a single-site deployment, doing so can put a significant extra
load on WAN bandwidth and transcoder resources. This is especially true as the number
of users in the system increases. Locating additional servers in branch locations can
greatly reduce the impact of these problems while providing the same seamless function-
ality as in a single-site model.
CUC Integration Overview
Integration in this context refers to interoperation with a PBX- or IP-based telephone sys-
tem. CUC supports a variety of integrations using SCCP, SIP, or PIMG/TIMG. Multiple
phone systems are supported concurrently; CUCM and CME can be supported using
SCCP or SIP, a SIP-capable PBX will integrate using SIP, and a variety of digital PBX prod-
ucts can be supported using a PIMG or TIMG device that converts a digital TDM circuit
to a SIP trunk.
CUC Integration with CUCM Using SCCP
A Voicemail Port Wizard is available in CUCM 8.x that simplifies the integration of CUC
with CUCM. The wizard requests user input to correctly set up the system, and then gen-
erates voicemail ports in CUCM and adds them to a Line Group. The administrator must
manually configure the Hunt List and Hunt Pilot to support the Line Group.
Key
To p i c
The Hunt Pilot is referenced by a Voicemail Pilot, which is itself referenced by a Voice-
mail Profile. Figure 13-1 illustrates the architecture of the voicemail integration on the
CUCM side.
Voice Mail Profile
Voice Mail Pilot
Hunt Pilot
Hunt List
Line Group
Voice
Mail
Port
1
Voice
Mail
Port
N
...
Figure 13-1
SCCP Voicemail Integration Components in CUCM
