Incoming Calls; Did Error Routing Settings - NEC 124i Enhanced Installation Manual

Program the VoIP Trunk Group and IP address for Trunk Groups.
In Program 0928, set trunk group 1 for routing to a VoIP trunk.
Table (Entry Number) 1
VoIP Trunk Group Number: 10
IP Address: 192.178.10.2
Program F-Route.
Program 0501
Dial 4 — 1 digit — Type 9 (F-Route)
Program 2902 Flexible Numbering Plan Lookup Table
Dial 4 — 3 digits — Entry No.1
Entry Number is defined by Program 2903.
Program 2903 Flexible Route Selection Table
Entry No.1 — Route Table No. 1
Route Table Number is defined by Program 2904.
Program 2904 Flexible Routing Tables VoIP
Route Table No. 1 — Trunk Group 101
VoIP Trunk Group 101 will point to Program 0928, table (entry) 1.
As a result, if a user dials the VoIP number 401, trunk group 101 is referred by F-Route. Then, the system checks the Program 0928 set-
ting and seizes a trunk from system trunk group 10. The call goes to address 192.178.10.2.
Special programming will be required if a remote system has two or more VoIP PCBs.

Incoming Calls

When an incoming call is detected, the VoIP PCB will be searched for an idle port on the VoIP PCB. An incoming call can be connected
to any of the ports on the PCB, so the trunk service type has to be the same for all the trunks on the same PCB.
Basic system settings are essentially the same as ISDN trunks. The routing programing is also the same. However, as incoming calls
may have a called party number, it is recommended that DID service type be used (Program 0901, Items 14-17 and 32-35 set to 3).
Incoming calls may not have a called party number or the number may not exist in the DID table. When this occurs, the DID Error Routing
will be used. Refer to the i-Series Software Manual , P/N 92000SWG**, for information on programming DID trunks.

DID Error Routing Settings

In the past, if a called party number did not exist in the Setup message, ISDN DID trunks would reject the calls. With the VoIP
H.323 incoming calls, DID error routing is used to handle the Setup message for calls without a called party number.
For example, DID Table Area #1 is being used, routing to trunk ring group 10.
Check the first DID table number in the DID table area (Program 1805).
The first table is 0001.
Program ' 1 ' for the DID intercepted call vacant number option (Program 1810).
Program 1810 Table #0001 -> Set 1 for the item 1
Program the DID Intercept Ring Group (Program 1809).
Program 1809 DID Table Area #1 -> Set TRG 10
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