Chapter 5 Integrating Cisco CallManager with Voice Mail Systems Using SMDI
Overview
5-2
Cisco VG248 Analog Phone Gateway Software Configuration Guide
OL-1209-02
Overview
The VG248 generates call information in an SMDI format for all calls coming into
any of the SMDI-enabled ports. The VG248 can also send and receive SMDI
messages to and from other SMDI devices, such as other VG248 devices, a legacy
PBX, or the legacy voice mail system.
The VG248 provides advantages to other methods used for integrating
Cisco CallManager with SMDI-based voice mail systems, including:
• Reliability for SMDI links using Cisco CallManager failover (see
Figure 5-1).
• Scalability by linking VG248 devices (see Figure 5-2).
• Multiple SMDI-based voice mail systems can be used on a single cluster, by
using one VG248 per voice mail system (see Figure 5-2).
• A single voice mail system to be used by multiple clusters, by using one
VG248 per cluster (see Figure 5-3).
• A single voice mail system to be shared between Cisco CallManager and a
legacy PBX (see Figure 5-4).
Table 5-1 provides an overview of the tasks required to implement this
integration.
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