Where to put qualify?

Asterisk Asterisk Support
1

Hi,

OS: CentOS 7.0 (64 Bit)
Asterisk Version: 11.16.0

My Asterisk server is directly sits on public ip address.

Our phones are behind the NAT as below:
ISP -> Router (Public IP address to private ip address routing)-> LAN Switch -> IP Phones

I understand about “qualify”. I am giving “nat=force_rport,comedia” in both general section of sip.conf and sip users accounts.

My doubt is:

Where I need to give qualify=yes exactly? Do I need to give in the general section of sip.conf file OR in sip users accounts?

Thanks in advance.

Mouli.

2

Yes. In one of those, depending on whether you want it to apply to a specific peer or all peers.

Why are you setting nat= when there is no hint of nat being used?

3

Hello David,

Thanks for your reply.

About setting up NAT: Some of my users can behind the NAT, or some may not be. How would I know about this dynamically?

Thank you.
Mouli

4

nat = auto_force_rport ; Set the force_rport option if Asterisk detects NAT (default)
nat = auto_comedia ; Set the comedia option if Asterisk detects NAT

–Satish Barot

5

Ideally your remote users should do what a properly configured Asterisk does and resolve the NAT issues locally so that the SIP is done purely in terms of public addresses.