If you are recording a call from your handset, the other end of the call may be recorded at a low volume. If you listen closely you can hear them. If you want a louder recording of the other end of the conversation, please turn on speaker phone.
Bluetooth headsets will not record the other end of the conversation as BlackBerry has not unlocked any APIs for this yet.
We are currently investigating ways to boost the volume of the other side of the recording.