[Asterisk-Users] Asterisk with Grandstream ringback

[Doug Reid - Stormcorp]

Hi All

We have Grandstream 102's running ver X.18. When hanging up after
a call has been made the grandstream seems not to disconnect
the call and when you put the handset down the phone rings
only to pick it up and be on the same call. This is happening
quite often and gets very irritating.

Can anyone help with this?

Regards
Doug