DID Fax

How DID work in Microsoft Fax Server

An important ability for fax server packages is to share fax resources among users.  To determine the right recipient of an incoming fax among hundreds users is a key element.  Microsoft Fax Server supports several ways of achieving this.  Each method has its advantages and disadvantages. Overall, DID routing is preferred for larger installations, and email integration.

DID routing using DID line, users can be assigned personal fax numbers without having to install physical fax lines for each number. DID line has feature to terminate more than one number in one physical line ( such as 100 fax numbers to one DID trunk ) which is different from traditional office or home phone line.

The numbers of the line are passed to DID fax module upon receiving the fax, and therefore Microsoft Fax Server can route the fax to the correct user. DID (Direct Inward Dial) routing is generally considered the most reliable form of automatic inbound routing. DID requires you to purchase virtual phone numbers from your telecom company, which you can assign to users or departments. The virtual phone number (DID number) will be passed to DID module so that Microsoft Fax Server knows to whom the fax should be routed. The system process is completely transparent to the caller and does not require any effort on his/her part.

If you have installed multiple DID lines with 1000 fax numbers, then you can assign each DID number to each user or destination. DID number appears the same as regular fax number so that each user own a direct fax number.  In User database, you define each user profile route code match with the assigned DID number. When someone send fax to the assigned DID number, Microsoft Fax will route to the user profile base on the DID number match with user's Route Code. If user has email address route enable in her user profile, the fax will be routed to her email address so as for folder or auto print routes.