Installation guide

System Configuration 118
Synapse Installation Guide
Fax Overview
This section describes how to configure the optional AT&T SB67050 ATA device for fax reception and transmission.
Call Appearance mode only—If you have a dedicated fax line and low fax volume, the optional ATA offers fax switching so that
you can use the fax line for both voice calls and faxes. If your fax does not have a DID number, when configured, the system
detects incoming fax tones and routes those calls through the configured ATA FXS port to the fax machine. If you are already
using fax switching equipment, the ATA can replace that equipment.
[T1] If the fax machine has a DID number, incoming faxes will come directly to the fax machine. Incoming voice calls should not
share that channel since the fax machine will answer incoming calls.
Considerations for Using the Fax Line for Voice Calls
If your business uses a fax line for incoming voice calls, unless the fax telephone number has DID, each incoming call on that line
is automatically checked by the system for a fax signal. This fax detection mode results in a delay of up to eight seconds before
connecting an incoming voice call to the Auto Attendant or Operator. In addition, during the delay, the ringback tone generated
by the CO (Central Office) is no longer heard by the caller. Instead, the caller hears the ringback tone generated by the Gateway.
[T1] When fax machines have DID numbers, there is no eight-second delay.
Line Appearance mode only—Do not assign the PSTN fax line to any Programmable Feature Keys on Desksets.
For more information, see the Synapse Administrator’s Guide at
www.telephones.att.com/
synapseguides.
This section applies to Call Appearance mode only.