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TTRs Required by Voice Messaging Systems/Auto Attendants Table
TTRs Required by Voice Messaging Systems/Auto Attendants
|
No. of VMS Ports |
No. of TTRs Required |
|---|---|
|
1 |
1 |
|
2 |
1 |
|
3 |
2 |
|
4 |
2 |
|
6 |
3 |
|
8 |
4 |
|
121 |
6* |
|
16 |
8 |
|
18 |
8 |
| 1 If a 12- Port EXPRESSO Enhanced Service Center is used, 8 TTRs are required. | |
When you program a Calling Group for Prompt-Based Overflow, additional TTRs are required for primary and secondary delay announcement devices (see TTRs Required for Primary Delay Announcement Devices When Using Prompt-Based Overflow Table and TTRs Required for Secondary Delay Announcement Devices When Using Prompt-Based Overflow Table).
 |
If no announcement is used on a primary or secondary delay announcement device, no TTRs are needed. |
