-----Original Message----- From: Dinesh [mailto:feedbak@imelhk.com] Sent: Wednesday, December 17, 2003 10:10 AM To: serusers@lists.iptel.org Subject: [Serusers] Nat Helper / RTPproxy

Hello All,

I have a couple of questions Regarding NatHelper & RTPproxy

1. Does NAThelper assist in NAT traversal when STUN cannot manage due

to Symmetric NAT.

yes

2. Does NAThelper provide any help when NOT used in conjunction with

RTPproxy.

yes, you can rewrite contact and sdp if the UA sends out internal IP address.

3. Are there any SER.cfg settings that are suggested to get started

with NAThelper. (We are using grand stream devices in addition to a few ATA)

nathelper.cfg in http://cvs.berlios.de/cgi-bin/viewcvs.cgi/ser/sip_router/etc/

4. Am I correct in the assumption that if you use a RTPproxy

• all the

real time voice traffic is passed through your network connection?

yes!

regards, klaus

Thanks & Regards, Dinesh

Dinesh Mahbubani The International Marketing Exchange Ltd. Tel: (852) 2541-2617 Fax (852) 2543-4537

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