Direct SIP calls - inbound

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spinnerfarm

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3CX system, ver 9.
Running for about 1 year
Callcenteric for a VOIP provider
All calls work great, inbound and outbound
Free system
dynamic IP address at location of the 3CX system
I have a dyndns account set up and this works fine

I want to set up Direct SIP calls, inbound and outbound
I set up a free account at iptel.org
I have enabled Direct SIP calls in Settings - advanced
I have set up my internal extension (104) with a SIP ID in extensions - 104 - other
I also use a DR
In settings advanced I have set the Local SIP Domain as office.local (this is the domain name for the system the 3CX server runs on)

If I look up my current IP address (where the server is)
from a softphone set up for the iptel.org account I can call [email protected]
This call gets right through to the DR, no problem.
I can also call the iptel.org phone from my 3CX extension as a SIP call - [email protected]

When I try to call the 3CX extension from the iptel.org phone using [email protected] it does not go through
I get the following in the log:
16:10:59.265 [CM500002]: Unidentified incoming call. Review INVITE and adjust source identification:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 213.192.59.75;branch=z9hG4bK547b.8e788247.0
Via: SIP/2.0/UDP 10.10.6.129:5072;received=96.61.87.215;rport=5072;branch=z9hG4bK933112
Max-Forwards: 16
Record-Route: <sip:213.192.59.75;ftag=7325;avp=JYEDBwBhY2NvdW50AwB5ZXMDCQBkaWFsb2dfaWQWADc3NjEtNGRmZTI3ZmYtZmM2NTdlZjU;lr=on>
Contact: <sip:[email protected]:5072>
To: <sip:[email protected]>
From: "farmer"<sip:[email protected]>;tag=7325
Call-ID: [email protected]
CSeq: 726 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, INFO, REFER, NOTIFY
Supported: replaces
User-Agent: NCH Software Express Talk 4.15
Content-Length: 0
P-hint: outbound
X-RTP-Proxy: YES

yyyyy = user name at my iptel account
xxxxxx = my dyndns account name

Now I suspect that it all has to do with A records and srv records (accoring to the blog post I read before trying to set this up).

If that is the case, I do have a domain name registered with godaddy that I could use and adjust the A record to my xxxxx.dyndns.org account but i do not know if an A record would accept an FQDN instead of an IP Address.
If it would, I could set the srv record for that domain (registered at godaddy) to point to my dyndns address as well.

Seems I am close in that I can call my 3CX system using a direct SIP address if I use the IP address of my system but I don't see how I can expect people to try to look that up before calling with a direct SIP call. I would think it should work with my dyndns address. If that is not the case I can change the settings in my spare domain at godaddy but i would need to know what to change those to.

Can anyone help? I am got an expert in this area so if you do have a suggestion, please put it in easy to understand directions.

Thanks,
Steve
 
Additional log information:
16:10:57.390 [CM302001]: Authorization system can not identify source of: SipReq: INVITE [email protected] tid=b47b.672afb53.0 cseq=INVITE [email protected]:5072 / 720 from(wire)
16:10:56.781 [CM500002]: Unidentified incoming call. Review INVITE and adjust source identification:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 213.192.59.75;branch=z9hG4bK4f9b.6b2af863.0
Via: SIP/2.0/UDP 10.10.6.129:5072;received=96.61.87.215;rport=5072;branch=z9hG4bK853112
Max-Forwards: 16
Record-Route: <sip:213.192.59.75;ftag=7325;avp=2boDBwBhY2NvdW50AwB5ZXMDCQBkaWFsb2dfaWQWADc3NjQtNGRmZTI3YjAtNmUzYmQxMGY;lr=on>
Contact: <sip:[email protected]:5072>
To: <sip:[email protected]>
From: "farmer"<sip:[email protected]>;tag=7325
Call-ID: [email protected]
CSeq: 718 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, INFO, REFER, NOTIFY
Supported: replaces
User-Agent: NCH Software Express Talk 4.15
Content-Length: 0
P-hint: outbound
X-RTP-Proxy: YES
 
spinnerfarm said:
16:10:56.781 [CM500002]: Unidentified incoming call. Review INVITE and adjust source identification:
INVITE sip:[email protected] SIP/2.0

Do you have xxxxxxxxx.dyndns.org (or whatever you use) datafilled in the Domain Name field, and the Direct SIP calls checked, in 3CX advanced settings?
 
Ah, i had the local FQDN (office.local) and not the dyndns name set. That was the problem.
Thanks for you help.

I might have some follow up questions as I test it all out but that certainly did the trick!
Steve
 
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