Features The Avaya MM710B T1/E1 Media Module terminates a T1 or an E1 connection to either private enterprise network trunks or to trunks to the public network. Built-in Channel Service Unit (CSU) Software-selectable T1 or E1 operation Echo cancellation D4, ESF, or CEPT framing ISDN PRI capability: 23 B-channel 1 D-channel or 30 B-channel 1 D-channel AMI, ZCS, B8ZS (T1) or HDB3 (E1) line codeing Fractional T1 supportThe Avaya MM710B T1/E1 Media Module disables a T1 or an E1 connection to private enterprise network trunks or to trunks on the public network. Compatibility Supported in G350, G430, G450, and G700 Media Gateways