dcjm Posted August 11, 2008 Report Share Posted August 11, 2008 Hello, I’m having a problem with getting reliable inbound connections. Hardware/software details: PBXnSIP v18.104.22.1688 (Win32) (Win XP Pro) Sonicwall TZ170 - firmware SonicOS Enhanced 22.214.171.124-6e Linksys SPA942 Phones - firmware version 5.2.2(a) Linksys WRV 200 Routers - Firmware 1.0.39 VoIP provider is Callcentric VoIP Layout Details: The Sonicwall is the main router with the PBXnSIP hanging off of it. The Sonicwall is configured to pass all PBXnSIP ports to the PBX PC. There are 2 branch offices that connect via a VPN provided by the Linksys router to the sonicwall. Each office has a Linksys phone. VoIP problem: When no inbound calls are placed for an undetermined about of time, the first inbound call is either unanswered after a long silence or is answered by CallCentric’s voicemail. If a second inbound call is placed right away the PBXnSIP will pick up the call in a normal time. All incoming calls for the next undetermined amount time, are answered as normal. Trouble Shooting details: This problem appears to be corrected by enabling SIP Transformations under the VoIP section of the Sonicwall. However, when I enable this, both branch offices will lose audio both ways. The phones are still communicating with the PBX because missed call notifications are e-mailed when attempting to call one of the branch offices. Any help you can provide will be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
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