3.10. Subaddress Fax Routing

A subaddress is a T.30 message protocol that allows a fax to be routed to one or more telephone numbers (or extensions) once it is received by the fax station.

Subaddress fax routing allows applications to do the following:

• Transmit subaddress fax routing information: Applications can send a 20-character (maximum) string that contains a combination of one or more phone numbers and/or extensions to allow a remote receiver with the capability of using the T.30 subaddress message to route the received fax data.
• Receive subaddress fax routing information: Based on the contents of the T.30 subaddress message received from the transmitter, applications can route incoming fax data to one or more phone numbers and/or extensions.

For more information on implementing this feature, see Sections 4.7.6. Enable Subaddress Fax Routing on page 67 and 5.2.6. Routing Fax Data to Multiple Subaddresses on page 79.

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