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Re: 3CX sends internal IP in Contact: Field / No ACK Respons Stepan, I've PMed you with requested information.

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Dan, I followed the exact steps you outlined below. I re-created the provider, input their IP in the "SIP Server and hostname or IP" and left the proxy fields blank. I put dummy data in the external number & authentication ID and...

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Dan, Unfortunately that's not possible. I don't feel comfortable posting PCAPs because they include information that I do not want to post like IPs, phone numbers, etc. I have checked the pcap from the carrier end and the private...

Re: 3CX sends internal IP in Contact: Field / No ACK Respons bump?

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Any further thoughts/ideas?

Re: 3CX sends internal IP in Contact: Field / No ACK Respons I have tried both using STUN and by forcing the public IP... it doesn't seem to make a difference.

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Hi Folks, Any feedback based on the trace?

Re: 3CX sends internal IP in Contact: Field / No ACK Respons How is this? Session Initiation Protocol Request-Line: INVITE sip:[email protected]:5060 SIP/2.0 Method: INVITE Request-URI: sip:[email protected]:5060 Request-URI User Part: 16475551234...

Re: 3CX sends internal IP in Contact: Field / No ACK Respons I am using Linksys WRT54GL, running Tomato Version 1.28. I don't think it does any packet inspection or ALG. More accurately, some versions of Tomato have SIP helper, but the version I am using does not. Just to be safe, I disabled...

Re: 3CX sends internal IP in Contact: Field / No ACK Respons I see the bug still exists in v10. It's simply impossible to force 3CX to use the public IP. I have tried: 1. Changing Providers>Advanced>Registration Settings > Specified IP (using my public IP) 2. Settings > Netowrk > STUN Server...

Has this been addressed?

Re: 3CX sends internal IP in Contact: Field / No ACK Respons anyone?

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Nothing really strange. The server itself - one NIC with the internal IP listed in the capture 192.168.2.60 The server is behind a linksys router which itself has one external IP X.Y.Z.A. No SPI or anything fancy as far as I know...

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Sure thing! One thing to note - the provider has multiple addresses from which the call could originate, in this case it comes through X.Y.Z.B, whereas only one IP is set up on the trunk for outbound purposes - X.Y.Z.C...

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Hi Mark, Using "Specified IP" did not make a difference. 3CX is still sending the internal IP in the Contact field.

Re: 3CX sends internal IP in Contact: Field / No ACK Respons Hi Mark, Thanks for your response. I checked the settings and "External(STUN resolved)" is currently selected. I will try using "Specified IP" option to see if it makes a difference. I should add... this is an IP Authenticated...

Provider responds with ACK to 192.168.2.60:5095 which never makes it to the 3CX. Why isn't 3CX using the public (STUN detected) IP in the Contact field? Note: This is on inbound calls. So 8551234567 is my DID. X.Y.Z.A = Source IP X.Y.Z.b = Provider IP U 2011/03/12 15:05:20.459041...