On NEC SL2100 system, we have 2 CO, DIL EXT 100 (MLT). When EXT 100 on conversation with a call from CO1, another call from CO2, we want to hear busy tone instead of ring back tone. How to do it?
1. You can combine via Tieline (Sip trunk, E1)
2. PRG 16-02 edit Dept. Group for EXT, PRG 16-04 Setting Call restrictions between Dept. Groups
3. PRG 16-03 settings Secondary Dept. Groups for 101 and 104, then PRG 16-04
[14-01-13] Trunk to Trunk Transfer: Select Trunk number and Enable.
[14-05] Trunk Groups: Set Trunk Group for Trunk
[14-06] Trunk Group Routing: Set Priority Order for Trunk Group
[21-03] Trunk Group Routing for Trunks
[24-09] Call Forwarding Fixed Settings
Call Forward Type:
•No call forward...
I didn’t upgrade PAL in both system. Internal call is okay, capacity system port is available.
When we set PRTA card mode T-point, master/slave then Layer 2 error ISDN, call failed.
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