Anonymous showing on incoming calls

[DrifterJack]

Hi.

We have been scratching our heads to try and figure out why on all incoming calls the word Anonymous appears on the screen of our phones. I've seen a couple of threads on here mentioning a similar problem but never seems to be a solution.

We do get the CLI of the incoming caller on the second line of the screen but on the top line we get a=Anonymous, and if possible we want to get rid of it.
We are using Gamma SIP lines. On a monitor trace of an incoming call i can see the line....
Contact: Anonymous <sip:xx.xxx.xx.xx:xxxx>
which i am assuming is the cause for Anonymous appearing on the display.
I have spoken to Gamma but they didnt have much to say and confirmed they weren't withholding any CLI on the line.

Any ideas?

Thanks
Jack

 

[sgrossman]

If you see Anonymous <sip:xx.xxx.xx.xx:xxxx> on a trace of the trunk, then that is what they are sending to the IP Office. The IP Office will not reject caller ID. I would advise contacting Gamma again and forcing them to look into it. They are certainly withholding CLI.

 

[DrifterJack]

Thanks sgrossman

So you reckon it could still be gamma even though as well as the Anonymous on the display we do also get given the callers number?
for example if i ring from my mobile my display shows...
a=Anonymous
07xxxxxxxxx

 

[sgrossman]

Try changing the button programming from a= to a call appearance. We label ours Call 1, Call 2, etc.

 

[Bas1234]

Call you provider and let them change it.

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