Solved Gradwell SIP Trunk 403 Access Denied erratic message

[deekay]

Hi,
Have just setup Gradwell SIP Trunk with 3 channels

INBOUND working perfectly

OUTBOUND ~ bit strange
Extension range 3xx Ext 332 outbound via Gradwell works perfectly but most other 3xx extensions give following message (all are Yealink T23G)

Call or Registration to 01142617888@(Ln.10003@Gradwell Communications) failed.

109.224.232.216 replied: 403 Access denied to SIP Trunk Out; from IP:109.224.232.216:5060

The rejection is always thie above highlighted Gradwell IP

Also have extension 500 - a remote extension here at home using Direct STUN and that one works perfectly with Gradwell outbound (Yealink T23G also)

Windows 10 PC based 3CX v16.0.8.9

Any guidance very welcome.

Keep SAFE keep WELL one and all

 

[cobaltit]

I recommend contacting Gradwell to ask them why they are rejecting your call.

 

[deekay]

Good morning, thank you cobaltit

I have reported to Gradwell ever since discovering this - they say everything is ok at their end and they're not blocking any calls BUT I still get access denied coming from their IP v109.224.232.216:5060

 

[YiannisH_3CX]

Make sure that on the extensions that fail you do not have an outbound caller ID set that does not belong to your Gradwell account. Also make sure that all calls use the same outbound rule to ensure that there is nothing funny happening there.

 

[deekay]

Hi Yiannish - many thanks for the guidance

That was the problem - all working fine now

Very best wishes


Kevin

 

[YiannisH_3CX]

Glad i could assist