© 2003 Cisco Systems, Inc. All right reserved.Important notices, privacy statements, and trademarks of Cisco Systems, Inc. can be found on cisco.comPage 1 of 9EDCS#Application NoteCisco 2650XM Gateway - PBX Interoperability: Lucent DefinityG3r PBX using Analog FXO Interfaces to an H.323 GatewayIntroductionThis document contains the results for PBX interoperability testing between PBXs and the Cisco Network Module with E&M to the FXSVoice Interface Cards installed in Cisco voice gateways.Network TopologyThe following diagram shows a pair of Cisco voice gateways that are configured for back-to-back VoIP operation. In this example,connectivity and interoperability is achieved through a Lucent Definity G3r V7 PBX that is connected to a Cisco 3745 back-to-back via anEthernet connection to a Cisco 2651XM connected to a Lucent Definity G3r V6 PBX.B a s i c T e s t C o n f i g u r a t i o nV o I PP h o n e Ae x t - 4 0 0 4P B X AL u c e n t D e f i n i t y G 3 r v 7P h o n e ER o u t e r - AC 3 7 4 5R o u t e r - BC 2 6 5 0 X MP h o n e FP B X BL u c e n t D e f i n i t y G 3 r v 6P h o n e CE & M t y p e I I / S C O T r u n k* 1 x x x xF X SE & M t y p e I I / SLimitationsNoneSystem ComponentsHardware Requirements• Cisco 2651XM gateway• Lucent Definity G3r PBX, Version 6Software Requirements• Cisco IOS Software Release 12.2(15)ZJ (c2600- jsx-mz-v122_15_zj_throttle.0.5.0)• Lucent Definity PBX Software Release G3r V6• VIC-VG-2FXS network module