Having issue with external extensions.

[jsadan]

Was having a issue with our ISP so we switched to someone else. All that has changed was the external IP. Now when my external employees try to make a call they see Contacting STUN server and then it goes to busy signal. Here is the log


15:00:09.891 [CM502001]: Source info: From: "External Employee"<sip:[email protected]>;tag=cc3416444d848ef6o0"Cell Phone CA"<sip:[email protected]>
15:00:09.891 [CM503013]: Call(59): Incoming call rejected, caller is unknown; msg=SipReq: INVITE [email protected] tid=-a28b9cbe cseq=INVITE [email protected]:5060 / 102 from(wire)
15:00:09.454 [CM500002]: Unidentified incoming call. Review INVITE and adjust source identification:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 192.168.x.xx:5060;branch=z9hG4bK-efdf76a6;received=74.87.8.xxx
Max-Forwards: 70
Contact: "External Employee"<sip:[email protected]:5060>
To: "My cell"<sipXXX)[email protected]>
From: "External Employee"<sip:[email protected]>;tag=cc3416444d848ef6o0
Call-ID: [email protected]
CSeq: 101 INVITE
Expires: 240
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: replaces
User-Agent: Linksys/SPA942-5.1.15(a)
Content-Length: 0

15:00:09.454 [CM302001]: Authorization system can not identify source of: SipReq: INVITE [email protected] tid=-efdf76a6 cseq=INVITE [email protected]:5060 / 101 from(wire)


Any ideas?

 

[jsadan]

Changes made:

Changed WAN IP on the router from 24.43.xxx.xx to 99.90.xxx.xx
Changed 1 to 1 NAT from 24.43.xxx.xx to 99.90.xxx.xx

Changed the proxy on the external extensions to match the new IP.

Troubleshooting:

Both external and internal calls TO the phone work great.

Calls to external and internal numbers FROM the phone to not work. Fast busy tone
Calls to voice mail immediately go to a fast busy tone.

Logs:
Are above.

What else Ive noticed, when dialing a number from an external extension for a split second on the phone it pops up 'Contacting STUN Server' then goes to the dial tone.

What I have tried:
Uninstalling and reinstalling the 3cx on the machine.
Resetting external phone to factory settings and then re-adding all information needed