Dial Codes - Extension Not Found

[Johnathan Penberrthy]

We are using Grandstream GXV3275 & GXP2200 phones. Which of course is not a supported provisioning phone. Though extensions are working using the SIP protocol.

When using the Dial Codes (like intercom/paging), we get a "Extension Not Found" Voice prompt. All other dial codes are not working as well. Intercom/Paging was working when using asterisk.

Any suggestions?

 

[leejor]

What digits are you sending to the PBX? Are these the correct dial codes? Is this confirmed in the 3CX logs?

 

[Johnathan Penberrthy]

I have confirmed the dial codes in the settings.

Codes like paging/intercom as *99(EXT) are being sent, and even dial extension VM as *(EXT).

All being seen in the logs as answered for a couple seconds or not answered.

 

[YiannisH_3CX]

Navigate to settings / Dial tone settings and verify that the Dial codes match the ones you are dialling

 

[Johnathan Penberrthy]

As with my prior post, I have confirmed the dial codes.

 

[leejor]

So, if I understand correctly, even dialling the voicemail system number reaches a recording saying that it is not a valid extension? If hhat is the case, then compare (in the logs) dialling the same digits from a non-Grandstream set and one having the issue. Couls it be an internal dialplan that is modifying the digits sent to the PBX?

 

[Johnathan Penberrthy]

No the voicemail extension of 999 works. Just any code in the "Dial Code Settings" page does not work. The voicemail extension setting is in the Voicemail page under settings.

 

[leejor]

So anything with a "star" code then? If that is the case, then perhaps the set is just not sending the star (just the digits), for some reason. Again, perhaps, some internal, set, dial plan?

 

[Johnathan Penberrthy]

This is the dial plan on the phone: { x+ | \+x+ | *x+ | *xx*x+ }

 

[leejor]

Haven't used Grandstream dialplans previously, but that would appear to be the default plan, which should work.
To invoke a feature, are you hitting a key, or actually dialling a star code? If you dial a star code, what digits does the 3CX log show that it received? Just the digits minus the *? If you are simply pressing a feature button, then perhaps that/those buttons are simply not programmed to send the correct code for the 3CX PBX. Different PBX's can use different codes and being a "non supported set" may mean that "configuration" is required to make the keys compatible with what 3CX expects to see when using a feature.

 

[Johnathan Penberrthy]

Nope, the person dials *80206 to invoke the intercom feature (which worked on PAIF asterisk). 3CX does show the call coming in as *80206, or any other dial code.

 

[leejor]

According to this...

https://www.3cx.com/docs/pbx-dial-codes/

*80 is used to put a call on hold, for a Mobile Service Agent.

 

[Johnathan Penberrthy]

Even the *9(EXT) setting does not work as well. No star code works.

 

[leejor]

Could this be a DTMF Method issue?

 

[Johnathan Penberrthy]

Even if this worked just fine on the old asterisk system. Also all phones are local to the phone server.

 

[craigreilly]

{x+ | \S\Px | \+x+|*x+|*xx*x+} is the string for Grandstream that I am using - atleast on newer firmwares.
Dial codes working without issue for me. (ie: *9200 to server room)

I see mention of
*<ext> - what should this do?
*99<ext> - intercom (default is *9<ext>

Do those phones have their own packet capture ability? If not - then setup a port mirror on your switch and run Wireshark on a laptop... Did you reset the phones to factory before provisioning for 3cx?