Chapter 8 Using VPIM for Networking with Cisco Unity Express or Other Cisco Unity Systems

Messaging Between Cisco Unity Servers in Different Directories

Figure 8-2 VPIM Subscribers That Correspond to Remote Cisco Unity Subscribers

Primary Location

Dial ID: 444

Domain Name: ny.cisco.com

Internet

NewYorkUnity

VPIM Delivery Location

Dial ID: 333

Domain Name: paris.cisco.com

Subscriber

Kelly Bader

Extension: 5678

VPIM Subscriber

Avery Hughes

Extension: 1234

Remote Mailbox Number: 1234

Primary Location

Dial ID: 333

Domain Name: paris.cisco.com

ParisUnity

VPIM Delivery Location

Dial ID: 444

Domain Name: ny.cisco.com

Subscriber

Avery Hughes

Extension: 1234

VPIM Subscriber

Kelly Bader

104948

Extension: 5678

Remote Mailbox Number: 5678

Audio Format Conversion Settings

When using VPIM Networking for messaging between Cisco Unity servers in different directories, the Audio Format Conversion Settings for outbound and incoming messages need to be coordinated on the Cisco Unity servers to avoid unnecessary conversions. When making decisions about the conversion settings:

Consider the network bandwidth between the local and remote Cisco Unity servers, and the volume of message traffic.

Determine which codecs are installed or will need to be installed on subscriber workstations and Cisco Unity servers in the local and remote sites.

The following examples show a few of the combinations of the Audio Format Conversion Settings to give you an idea of the options.

Example 1: Both Cisco Unity Servers Use G.729a for Recording and Storage

As shown in Figure 8-3, both the local and remote Cisco Unity servers record messages by using the G.729a codec. At 8 Kbps, the G.729a codec is recommended for use when network bandwidth is an issue. Because of theses considerations, no audio format conversions are needed when messages are transmitted between the servers.

Networking Guide for Cisco Unity Release 5.x (With Microsoft Exchange)

 

OL-13844-01

8-3

 

 

 

Page 193
Image 193
Cisco Systems 5.x manual Audio Format Conversion Settings, Vpim Subscriber