The Avaya MM710B T1/E1 Media Module terminates a T1 or an E1 connection to either private enterprise network trunks or to public network trunks. The MM710B T1/E1 has a built-in Channel Service Unit (CSU). An external CSU is not necessary.

The MM710B T1/E1 is supported in the G450 and G430 Branch Gateways.