Overview

DID routing through GFI FAXmaker is based on mapping different fax numbers to a particular set of GFI FaxMaker users.  This article describes the process FaxMaker uses for DID routing.  

Solution

Through Direct Inward Dial (DID) routing, the telecommunications provider assigns you a range of virtual numbers that enable individual users/printers/public folders to have their own fax numbers, without the need of a physical fax line for each. If you already have ISDN, you can use available lines from your Private Branch Exchange (PBX). On answering the fax call, the ISDN protocol passes the number on which the call is being answered to GFI FaxMaker.

The DID can simply be considered as the set of digits which uniquely identify a called party number. We can break down the number received by GFI FaxMaker as follows:

<fixed number> <varying number>

<31312244><101>
<31312244><102>
<31312244><103>
<31312244><104>

Therefore, DID routing is based on the varying number part.  On receiving a fax, GFI FaxMaker follows the following steps:

1. When the incoming fax is received, FaxMaker retrieves the Called Party Number.  This is provided by the phone system or the provided and FaxMaker cannot route incoming faxes without this information.  

2. FaxMaker will capture the number of digits, set on the fax line configuration, to capture for routing.  In the example above it would be 3 digits.  101, 102, 103 and 104.  

3. The entries in the DID routing rules are compared to the digits captured in step 2, looking for a match.  

4. Once a match is made, the fax data and information are routed according to the specifics, setup in the routing rule that the incoming number matches.  This could include emailing to a user or depositing in a folder location.