Hello RUSCLE,
welcome to the Polycom Community.
As already explained to the two previous posters the Phone is an analog phone dialing a number using => DTMF <= .
The phone uses the same tones and length of tones when you are making the initial call to your conference service as it does when you are prompted to type in the requested code.
There is no difference between the two methods aka pressing the number keys on the phone as the phone is not aware if it actually connected to the far end or not.
The simple fact that you can dial the number for your conference service proves that the phone is working as it has send the DTMF digits representing the number you are dialing either to your PABX or your PSTN line.
Root Cause for failed DTMF:
- Often ATA adapters (conversion between analog and VoIP) pickup the initial dialing of the number but then prevent the phone in sending any DTMF during the call as they may send it in a different payload or method.
The above has nothing to do with Polycom and you need to contact whoever provides the analog Line for the phone.
- A PABX provides an analog line for the phone but once the call “leaves” the PABX and is routed into the PSTN network the DTMF is simply not send via the Trunk used.
The above has nothing to do with Polycom and you need to contact whoever provides the analog Line for the phone.
- A PSTN line is being used and the call is routed via a compressed VoIP connection (for example G729) which does not cope very well with DTMF.
The above has nothing to do with Polycom and you need to contact whoever provides the analog Line for the phone.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
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If official support is required please check how to phone or open a case here
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The title Poly Employee & Community Manager is a community setting and
does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.
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Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections
