AT&T Synapse Installation Manual page 32

Loud Ringers

Loud Ringer devices must be connected to an FXS port assigned as Voice (default setting). Loud Ringers can be used for
alerting users of an incoming call via a loud speaker and are treated within Synapse as a regular analog phone instead
of OHP equipment. This type of overhead alerting can only be done by including the voice FXS port in a Ring Group.
A source for Music On Hold (MoH)

You can use the ATA to route MoH audio input to outside held, parked, or queued calls. When external callers are placed
on hold, parked, or enter a call queue, they hear the audio source provided by the MoH input. The system administrator
must configure the MoH in the WebUI. See "Hold Settings and Music on Hold (Requires ATA)" in the Synapse
Administrator's Guide.
Door phone

See "Station Port (FXS) Door Phone Support" on page
Installation
Synapse Installation Guide
27.
31