Phone and System Administration
31
You can program the following individual trunk options:
• Programming the Trunk Answer Supervision Type on page31
• Programming Caller ID on page32
• Programming the Hybrid Balance Option on page33
• Programming DTMF or Dial Pulse Signalling on page 33
• Programming Trunk Group Assignments on page34
• Programming the Busy Trunk Option on page 35
See Figure 3 on page 40 for the Trunk Database flowchart.
Programming the Trunk Answer Supervision Type
Answer Supervision determines whether the system should consider a call valid when it
receives polarity reversal from the CO, or wait for the Valid Call timer to expire. Any outside
call put on hold becomes valid immediately, regardless of Answer Supervision or Valid Call
timer status. There are three Answer Supervision Type options:
•Polarity Reversal: A loop reversal must be received to consider the call valid. When the
first loop reversal is received, the call is made valid immediately, and the phone display
shows the call cost. When a second loop reversal is received, the system terminates the
call. If a second loop reversal is not received, the system does not terminate the call unless
the inside party hangs up or loss-of-loop is received from the telephone company.
•Valid Call Timer: The call is validated after the V alid Call Timer expires. All polarity reversals
received before and after the Valid Call Timer are ignored.
•Valid Call Timer with Polarity Reversal: If a loop reversal is received before the Valid
Call Timer expires, the call will be made valid immediately, and the phone display shows
call cost. When a second loop reversal is received, the system terminates the call. If a loop
reversal is not received before the Valid Call Timer expires, the call is made valid by the
timer. If a loop reversal is received after the timer expires, the loop reversal is ignored, but
the call cost is reset. If a second loop reversal is then received, the system terminates the
call. If a second loop reversal is not received, the system will not terminate the call unless
the inside party hangs up or loss-of-loop is received from the telephone company.
See page 31 for programming instructions.
To program the Answer Supervision Type:
1. Dial 9932 (9132 in Europe). If a passcode is required (see page25), ENTER PASSCODE
appears (otherwise, go to step 3).
2. Enter the passcode, and then press #. ENTER DATABASE OPTION (1 - 3) appears.
Note: At any time, you can press * to return to the previous menu, or press the Speaker button
to exit the programming session and cancel any unsaved changes.