T1 AND ISDN (T1/PRI) CALL OPERATION DX-120 Programming Manual
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T1 AND ISDN (T1/PRI) CALL OPERATION
The following provides in formation about how the system process calls when either a T1 or ISDN (T1/PRI) is installed.
HINT
Be sure to review “Appendix D - Trunk Directory Numbers” on page 475.
T1 Call Operation
OUTGOING CALLS
• Dial trunk group access code (e.g. the default of “741”), or press individual trunk line button to seize an idle trunk.
• If a trunk group consists of analog trunk and T1 trunk lines, access to the trunk group will be assigned to an idle
trunk line in accordance with the programmed hunting methods such as SEQF (sequential from the first), SEQL
(sequential from the last) or Random.
• The hunting sequence is based on the physical port number assigned to the individual trunk, either analog or
digital.
INCOMING CALLS
• Shall be treated as the normal analog trunk call and ring the programmed answering extensions for notification.
• Calling party number will be displayed when received.
• Multiple Call Handling using programmable Call Keys is available
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