== Asterisk Notes ==

The Jitter Buffer works like this

jbenable=yes in sip.conf should mean the following:

"dejitter the incoming audio from the SIP endpoint if the downward leg
can't accept jitter or does not dejitter on its own."

And jbforce=yes in sip.conf mean:

"always dejitter the incoming
audio from the SIP endpoint regardless of the downward leg."

jbenable=yes in zapata mean:
Enable jitter buffer for calls which came from a sip or iax channel

http://www.asterisk.org/node/48317