problem in CCM and Gatekeeper

[Alhassan Ibrahim Mohie]

In my network there are an cisco call manager and cisco gatekeeper.I added the gatekeeper on a CCM bacause of IP Phones can call ATA end points.I finished this task succesfully but there are a problem . When I call from IP phone to ATA endpoints I can not hear ringback tone but If I call from ATA end point to IP Phone I hear ringback tone . Please give me advice

[Roger Kallberg]

You don't need a Gatekeeper for ATA. ATAs are commonly SCCP or SIP devices, these have no use of a GK. Only H.323 devices can make use of a GK.

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