SIP Persistence on branch id

i think i know why the outgoing VS irule is not working, i think it related to the fact there is no pool on the irule, i tried to change it like this:

 

 

when SIP_REQUEST {

 

pool server-pool

 

session add sip [SIP::call_id] [IP::client_addr]

 

forward

 

log local0.alert "Added outgoing call id session"

 

}

 

 

 

this irule works with no error, but i am also looking for an irule to the incoming SIP VS to do session lookup for the callid added in the outgoing VS irule and then forward it to the origin server that initiate the outgoing SIP session.

 

help will be appreciated here.

 

thanks