Missed Calls and Received Calls

Freepbx 2.5.2.2
OS: CENT OS 5.3
Handsets Polycom IP-550, and Cisco 7960

All my missed calls and received calls are listed on my phone as follows
And thus cannot use these list to dial out using the phones dial soft key.

 sip:6045217778@domain
             or
 sip:4402@domain

How can i correct this so the missed and received calls are list
as follows.
6045217778
or
4402

Please help users are getting angry!

Did you get this resolve? I have the same problem with 25 Polycoms 501 …

no luck so far…

MST