Nortel / Avaya BCM GATM8 - 8 Port Trunk Module with Caller ID

The global analog trunk media bay module (GATM4) provides an interface for eight analog public switched telephone network (PSTN) lines

• Supports both pulse and tone dialing, as well as caller ID and disconnect supervision in selected markets throughout the world
• Compatible with the BCM 200/400 Main Unit, BCM 400 Expansion Unit, BCM 450 Main Unit, BCM 450 Expansion Unit and BCM 50 Expansion Unit