Front bezel of the BTM has a RJ-48C connector that will connect the DTM to the service provider connection point. Supports 24 ports for T1 or PRI interface through the BCM 200 or 400. Compatible with the BCM 200/400 Main Unit, BCM400 Expansion Unit, BCM450 Main Unit, BCM450 Expansion Unit and BCM50 Expansion Unit.
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