I noticed a difference between ser and asterisk. When a phone send a register packet with src port 30001, dst port 5060 and "via:x.x.x.x:32001", ser will response a 200 response with "src port 5060, dst port 30001 and "via:x.x.x.x:32001", but asterisk will response a 200 response with "src port 5060, dst port 32001 and "via:x.x.x.x:32001"
Don't know why they make this difference? which one more obey the sip standard?
thanks.