Hi everyoneThis is my first time configuring a router for use with VoIP and I'm at a crossroads where I'm not sure if I'm configuring things correctly or if there is a service issue. I have the D-Link setup with a sim card on Spark's 4G network for Internet access (the router is going into a location where a physical connection is unavailable). I have wireless and Internet access configured OK. The router has a RJ-11 port with a phone handset connected. I am running the latest posted firmware.I can make calls and intermittently I can receive them but more often than not I get an IVR message saying that the person at extension x is unavailable. I have logged the issue with 2Talk - but so far haven't heard anything back.My configuration of the router is default except for the following settings:VoIP Line:Name: voip1Phone number: <my 2Talk number>Username: <my 2Talk number>Password: <my 2Talk password>Codec Priority:G792a 1st 20msG.711a-law 2nd 20msg.711u0law 3rd 20msVoIP Profile:Name: 2TalkInterface: usb0Server IP / Domain Name: sip.2talk.co.nzPort: 5060Protocol: UDPEnable Outbound Proxy: tickedOutbound Proxy Address: sip.2talk.co.nzPort: 5060User agent domain:<blank>User agent port: 5060URL scheme: SIPUser parameter: noneInitial unregister: ticked (cannot untick)Register expires: 3600Session expires: 3600SIP DSCP: EF - 46Min-SE 180Session Expires Refresher: UACDTMF Type: InBand (G.711)DTMF Payload : 101Enable RPORT: ticked (cannot untick)RTP FeaturesRTP Port Lower: 49152RTP Port Upper: 50000RTP DSCP: EF - 46Any help anyone can offer would be appreciated, I'm at my wits end, and not really sure of what all of the settings do. Is there a firewall rule I need to define to get this working?
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