21 Dec
2003
21 Dec
'03
10:06 p.m.
I was wondering if anyone can help me. We (my company) are having a
problem with sending calls to multiple Cisco ATA 186s behind a NAT. We
get one way audio.....we have a company in Iraq that is part business,
but also a relief organization. We need someone to help us get these
calls working, so that a doctor from Boston can call into a hospital in
Baghdad and work with the doctors there (for example). We have VoIP and
networking people working on it, but there is a problem with the port
assignments (not sure of more detail yet).
This is something we will pay for, just that we can't find the correct
person. Does anyone know someone that has the experience w/ ATAs to
help us?
Thanks
Chris
_______________________________
Chris Mulhern
Director, Business Development
TigrisNet
www.tigrisnet.net <http://www.tigrisnet.net/>
+1 (310) 827-7600
+1 (310) 617-3563 (Cell)
+1 (888) 265-5046 (Fax)
_______________________________
5 Jan
5 Jan
12:31 a.m.
At 09:06 PM 12/21/2003, Chris Mulhern wrote:
I was wondering if anyone can help me. We (my
company) are having a problem with sending calls to multiple Cisco ATA 186s behind a NAT.
We get one way audio.....we have a company in Iraq that is part business, but also a
relief organization. We need someone to help us get these calls working, so that a doctor
from Boston can call into a hospital in Baghdad and work with the doctors there (for
example). We have VoIP and networking people working on it, but there is a problem with
the port assignments (not sure of more detail yet).
Well, ATAs don't have very good NAT traversal properties -- modern
phones support STUN. Since there are NATs which are hard-to-traverse
even for STUN-capable phones, you also need to solve such cases
on the SER part. Getting over NATs is generaly a tricky manner for
which you need a solid strategy. Let me know if you still need help
on this.
-jiri
3:19 p.m.
On Sun, 4 Jan 2004, Jiri Kuthan wrote:
At 09:06 PM 12/21/2003, Chris Mulhern wrote:
Version 3.0 of ATA software has STUN support and some other new features.
Saludos
JesusR.
-------------------------------
Jesus Rodriguez
VozTelecom Sistemas, S.L.
jesusr(a)voztele.com
http://www.voztele.com
Tel. 902360305
-------------------------------
I was wondering if anyone can help me. We (my
company) are having a problem with sending calls to multiple Cisco ATA 186s behind a NAT.
We get one way audio.....we have a company in Iraq that is part business, but also a
relief organization. We need someone to help us get these calls working, so that a doctor
from Boston can call into a hospital in Baghdad and work with the doctors there (for
example). We have VoIP and networking people working on it, but there is a problem with
the port assignments (not sure of more detail yet).
Well, ATAs don't have very good NAT traversal properties -- modern
phones support STUN. Since there are NATs which are hard-to-traverse
even for STUN-capable phones, you also need to solve such cases
on the SER part. Getting over NATs is generaly a tricky manner for
which you need a solid strategy. Let me know if you still need help
on this.
7630
days inactive
7645
days old
2 comments
3 participants
participants (3)
-
Chris Mulhern -
Jesus Rodriguez -
Jiri Kuthan