User`s guide

Allworx Server Administrator’s Guide Version 7.6
1-866-ALLWORX * 585-421-3850 Page 163
www.allworx.com
Revised: 11/22/13
22 Direct Inward Dialing (DID)
Direct inward dialing (DID) is a service offered by a local telephone company that
provides a block of phone numbers for calling into a PBX without requiring a physical line
for each number. In cooperation with the PBX, map each number to a PBX extension.
Each PBX user has a unique outside number used to ring the user’s phone directly,
rather than directing the incoming call to an Auto Attendant.
There are three steps to configuring the Allworx server for DID service:
1. Create a DID block.
2. Configure the call routing plan for the DID block.
3. Create a DID line for each DID trunk line plugged into the server.
To create a DID Block:
1. Login to the Allworx server admin page, navigate to Phone System > Outside
Lines, and locate the Direct Inward Dial Blocks section.
2. Click the add new DID Block link.
3. Enter the Starting Phone Number and Total number of phone numbers in the DID
Block fields specified by the telephone company.
4. Click Add when complete.
To configure a Call Routing Plan for the DID Block:
1. Create the DID block.
Note:
If the site phone numbers are scattered over a range of numbers, create DID blocks for
each individual or grouping of phone numbers. However, it is preferable to create a larger
DID block that spans multiple DID ranges, even if many of the numbers in the block are
not in use. Doing so makes management of the blocks easier. Also, since there is a limit
to the number of assigned DID blocks to any outside line (128 blocks per line), combining
DID numbers into larger blocks avoids reaching this limit.