SIP : Max Forwards header handling
From TBwiki
Determine how to pass the hop counter (or SIP max-forwards) from the incoming leg to this outgoing SIP leg (as max-forwards header on this SIP outgoing leg)
- Don't forward: Don't forward the incoming leg's hop counter (max forwards) to this outgoing leg
- Forward: Forward the incoming leg's hop counter (max forwards) to the outgoing this (without decrementing)
- Decrement and forward: Decrement and forward the incoming leg\'s hop counter (max fowards) to this outgoing leg. Drop the call if value reached 1.