[Asterisk-Users] CallerID and anonymous SIP calls

[Marcello Lupo]

Hi to all,
can you suggest to me the best way to avoid problems in the CDRs for anonymous 
sip calls?
I have some peoples that set Send Anonymous : Yes in their Grandstream phones 
and i don't receive the username as phone number that i use to make billing. 
It is empty. The only place where there is the phone number is in the peer 
name where it write the name of the peer that in this case is the phone 
number.
Have you any idea how to solve it?
Now i used the Cut to extract the phone number from the name of the peer and 
set it as callerid but it don't seems to me the best solution. Because for 
example i do not set the callerid for internals SIP calls leaving the 
callerid as is and in this way i'm not able (if i like to do) to bill 
internal calls to the VOIP community.
Thanks,
bye,
MArcello