Avaya MERLIN MAGIX Maintenance And Troubleshooting Manual page 75

Maintenance and Troubleshooting
In the following table, the call volume per hour includes all calls originating from single-line
telephones, calls on tie lines, incoming remote access and DID calls.
Table 3-5. System Requirement for TTRs
Calls/Hour
110
180
350
420
610
710
Table 3-6. TTRs Required for Primary Delay Announcement Devices When Using Prompt-
Based Overflow
Number of Devices
Touch Tone Receiver Problems
3-10
No Account Codes Used
2
4
4
6
6
8
1
2
3
4
5
6
7
8 or more
TTRs Required
Account Codes Used
4
6
8
8
10
10
Number of TTRs Required
1
2
3
4
4
5
5
6