Not able to transfer calls to one user
Recently I came across this very weird issue whereby any
users in lync 2010 environment can not transfer calls to particular users ( i.e
if they transfer it by searching name in lync client ) however, if they transfer
calls by that user’s extension number then they could successfully transfer the
calls.
In nutshell, if they transfer call to user’s SIP uri then
call will fail and if they transfer it to his extension then call will connect.
After obtaining debug logs on Lync FE server, I found that
Lync was trying to transfer call to “
0867588” number because of refer message. ( As this site had media bypass
enable )
If in your environment any usre’s SIP URI is number and if
you have media bypass enable then any other user won’t be able to transfer
external calls to that particular user ( who has number in SIP URI) because of
the refer message only gives number to front end server and then instead of
trying to send call to sip uri , lync will try calling that number and call
will fail.
