RE: [Serusers] Nat Helper / RTPproxy - sr-users

17 Dec 2003

...
  -----Original Message-----
 From: Dinesh [mailto:feedbak@imelhk.com] 
 Sent: Wednesday, December 17, 2003 10:10 AM
 To: serusers(a)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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