Hi,
When performing an unattended transfer using either cisco or linksys phones, the caller hears silence until the transferee picks up.
Surely the caller should be hearing ringing?
Any ideas what could be wrong here or is it a bug?
The first thing I would check is to make sure there is IP routing between the phones.
Also some debugs from the CLI would be helpful, is the call still showing up in show channels etc.
Finally what version of Asterisk are you using.