"Incoming call rejected, caller is unknown" External

[YeshWillis]

I have "Acrobits Softphone" on two iPhones. One stays in network and connects over Wifi and works fine. The Second connects over 3G as an External Extension. The device registers but when I go to call another extension that is on the internal network of the PBX it fails the call right away and gives the following 2 errors in the Server Activity Log.

19:34:08.021 [CM502001]: Source info: From: "First Last"<sip:[email protected]>;tag=F9DA963FC88DC83FE493E33D25476A14<sip:[email protected]>

19:34:08.020 [CM503013]: Call(1): Incoming call rejected, caller is unknown; msg=SipReq: INVITE [email protected] tid=Ytf1gBNA4YKWCMNn cseq=INVITE [email protected]:5060 / 2 from(wire)

xxx.xxx.xxx.xxx is my external IP
ooo.ooo.ooo.ooo is the external IP of my iPhone

Extension 101 is the iPhone and 100 is the Softphone inside the PBX's network


I may be overlooking something obvious, but ... what am i doing worng?

 

[leejor]

Have a look at the 3CX log when the external phone first registers, make note of the IP/port it uses. Then compare info that to an incoming failed call. Is there a difference in IP's
Are you placing "remote" calls over a WiFi network (behind a router) or are you using the data network of your phones provider?

 

[YeshWillis]

The IP address when it registers is the Same as the IP address that gets used when the device attempts to place a phone call. At the moment I am trying to get the device to work over 3G so i will have a mobile, permanently connected external extension.

When the call from the iPhone on 3G network is attempted and the call is rejected as stated in the original post, in the "incoming call rejected" line the contact shows up as 11&external.ip.of.iphone
then in the next line, "Source Info" it shows up as as 11&fake.dyndns.com

11 = the Extension of the iPhone Device
fake.dyndns.com = the DynDns resolving my external IP.
external.ip.of.iphone = External IP of my iPhone