Polycom RealPresence Trio 8800 - Unable to Dial Outbound

Chris Krafcky
Occasional Contributor

Polycom RealPresence Trio 8800 - Unable to Dial Outbound

We are in the process of configuring a demo unit and are not able to make outbound calls.  The demo unit is configured as Skype for Business for Line #1 and Avaya for Line #2.  I've double checked the digit mapping, and everything seems to be in order.  I am however not very familiar with Avaya.  Our environment uses the standard of dialing 9 first.  The digit map that I have in place is [2-9]11|0T|9011xxx.T|9[0-1][2-9]xxxxxxxxx|9[2-9]xxxxxxxxx|[1-9]xxxT.  I have also uploaded a copy of the Polycom logs from the device.

Polycom Employee & Community Manager

Re: Polycom RealPresence Trio 8800 - Unable to Dial Outbound

Hello @Chris Krafcky,

welcome to the Polycom Community.

It is always useful to include the currently used UC Software version as issues experienced or a question asked may already be addressed in a newer release.

This also allows yourself and others to check against current software release notes, Administrator Guides or FAQ post’s.

The above is also stated in the "Must Read First" and is the absolute minimum requirement every new post should include. .

In addition providing us with this basic information gives Polycom an idea what Software Versions are used in the field and avoids wasting time trying to troubleshoot issues which have already been addressed.

Therefore the Polycom VoIP FAQ contains this post here:

Question: How can I find out my SIP or UC Software Version of my Phone?
Resolution: Please check here


As the Hybrid feature is only officially supported since UC Software 5.5.2 I am assuming you are using this version.


Unfortunately you are not telling us what number you are trying to dial and also the logs do not contain SIP debugging to see if the number dialed actually goes out via the right registration.


I suggest you attach a backup of your configuration (see FAQ) and also set SIP to debug (see FAQ) so we see more details.

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


If official support is required please check how to phone or open a case here

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.


⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓SIGNATURE ⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓
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
Message 2 of 2