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Ca't complete calls to some external numbers

Occasional Advisor

Ca't complete calls to some external numbers

 - Poly Trio 8800

 - UC Software Version:

 - s/n:  0004F2FFEA74

 - Skype for Business Online


Using the UI on the device, we are unable to make calls to certain toll-free/long distance numbers.Doesn't seem to be a common pattern.  Some 1800 & LD  numbers work, some don't.


Am I missing something obvious?


Message 1 of 3
Polycom Employee & Community Manager

Re: Ca't complete calls to some external numbers

Hello @fi85511 ,


Welcome back to the Poly Community.

Please ensure you always check the FAQ's and/or utilize the community search before posting any new topics or follow up posts.

Oct 7, 2011 Question: Phone unable to Dial a number when Off Hook or on 2nd Call in a Conference or Digitmap issues

Resolution: Please check => here <=




Jan 19, 2012 Question: How to troubleshoot Polycom VoIP related Issues?

Resolution: Please check => here <=




Jan 17, 2017 Question: How can I troubleshoot simple Skype for Business, Office365 or Teams issues?

Resolution: Have a look => here <=


If you still struggle please work with your reseller to open a ticket.

End Customers are usually unable to open a ticket directly with Poly support.


SCANSOURCE INC sold this Trio back in 17/03/2017

As the unit is no longer within the warranty please be prepared to Pay Per Incident / PPI. This is all outlined in detail here

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

<======== Signature / Disclaimer ========>
Please be aware:For questions about the type of support to expect please check here

Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

The title Polycom Employee & Community Manager is an automatic setting within the community and any forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.
Poly employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and maybe answered on weekends, bank holidays or personal holidays.
Message 2 of 3
Occasional Visitor

Re: Ca't complete calls to some external numbers

We've seen that issue before also. The fix for us was to have our SIP trunk provider block video codecs from their end. 

Message 3 of 3