Page 1Cisco 2621 Gateway-PBX Interoperability:Lucent/Avaya Definity G3si with E1 PRI NET5SignalingThis document describes the interoperability and configuration of a Cisco 2621 voice gateway with aLucent/Avaya Definity G3si PBX using E1 PRI NET5 signaling. It includes the following sections:• System Components• Configuration Tasks• CaveatsSystem ComponentsPBX Model Lucent/Avaya Definity G3siPBX Release 7.0Telephony Signaling E1 PRIVoice Gateway Cisco 2621 with 2MFT E1 PortGateway Release Cisco IOS Release 12.2(3.5)TCall Manager Release 3.1VoX Protocol H.323Configuration TasksSee the following sections for configuration tasks for this feature:• Set Up command.• Lucent/Avaya PBX Configuration• Call Manager Configuration