Trunk Groups - NEC Xen Topaz Features And Specifications Manual

XEN Topaz

Trunk Groups

• Description
Trunk Groups let you optimize trunk usage for incoming and outgoing calls. With Trunk
Groups, users can have loop (rotary) keys for trunk calls. Incoming trunk group calls
ring these loop keys. For outgoing calls, the user presses a loop key to access the first
available trunk within the group. You set the access order in trunk group programming.
The system allows up to 25 trunk groups.
Loop keys give an extension user more available function keys, since the user doesn't
need a separate line key for each trunk. The user only needs one loop key for each
trunk group. This simplifies placing and answering calls.
Conditions
None
Default Setting
All trunks are in group 1.
• Programming
• Related Features
Features and Specifications Manual
10-09-01: DTMF and Dial Tone Circuit Setup
Allocate the circuits on the 308M or DSPDB PCBs for DTMF receiving.
14-05-01: Trunk Groups
Assign trunks to trunk groups (1-25).
14-07-01: Trunk Access Map Setup
Assign trunks to Access Maps (1-51).
15-06-01: Trunk Access Map for Extensions
Assign Access Maps (1-51) to extensions.
15-07-01: Programming Function Keys
Assign function keys for trunk group access (code *02 + group) or loop
keys (code *05 + 0=incoming, 1=outgoing, 2=both + trunk group (001-
100). If loop keys are used, assign the loop key to a trunk group in Pro-
gram 15-13.
20-02-02: System Options for System Telephones - Trunk Loop Access Key
Operating Mode
Set the operating mode of the extension's trunk group keys (Incoming
and Outgoing Access = 0, Outgoing Access =1, Incoming Access = 2).
• Abbreviated Dialling
Unless a user preselects a trunk, Trunk Group programming selects the trunk
Abbreviated dialling users for trunk calls.
• Automatic Route Selection
If a user dials a number that is not programmed in ARS, the system can route the
call to a trunk group.
• Central Office Calls, Placing
Instead of using Trunk Groups, an extension user can place a trunk call by:
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