Today I had a case at a customer where the PSTN users, which dial in to a Lync Conference, was only shown as “Guest Guest” like below:
The number which is normally shown on mobile users wasn’t there.
I did some traces and found calls that came from the customers Audiocodes Mediant 1000 did not send a display name that Lync can use:
The trace look like this:
After checking the configuration on the Mediant 1000 I found this parameter:
After setting this to Yes
Then the conference shows the PSTN users with their phone number as I would have expected.
The sip trace now shows this:
Case solved J