Avaya MM721 Basic Rate Interface (BRI)

FeaturesThe MM721 Basic Rate Interface (BRI) media module contains eight ports. You can administer these ports either as BRI trunk or BRI endpoint connections, such as a telephone and data module.Note:You cannot administer the MM721 BRI media module to support both BRI trunks and BRI endpoints at the same time. You can utilize all eight ports on the MM721 for just stations or just trunks. You cannot use a mixture of ports for both applications.For BRI trunking, the MM721 BRI media module supports up to eight BRI interfaces to the central office at the ISDN S/T reference point.For BRI endpoints, each of the eight ports on the MM721 BRI media module supports integrated voice and data endpoints for up to 2 BRI stations or data modules or both. The MM721 BRI media module provides -48 volt phantom power to the BRI endpoints.The MM721 BRI media module supports 4-wire S/T ISDN BRI on each interface.The MM721 BRI media module communicates information in two ways:Over two 64-kbps channels called B1 and B2. You can circuit-switch these channels simultaneouslyOver a 16-kbps channel called the D-channel that is used for signaling The circuit-switched connections have an A-law or Mu-law option for voice operation. In the data mode, circuit-switched connections operate as 64-kbps clear channels.  CompatibilityThe MM721 supports the G450 and G430 Branch Gateways with Communication Manager Release 6.2.The MM721 supports the G450 and G430 Branch Gateways with Communication Manager Release 6.0.1 build 31_18_1.Includes RefurbishedLibrary