[Asterisk-Users] Remote employees using Polycom 501 lose abilityto receive incoming calls after few minutes.

[Alex Robar]

Not all of them... This has been a sticking point for the SoundPoint IP
501's.

Alex

On 6/28/06, Cullin J. Wible <cwible at algorim.com> wrote:
>
> Polycom phones support STUN - that should solve the issue too.
>
> Cullin
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Dr. Michael
> J.
> Chudobiak
> Sent: Wednesday, June 28, 2006 1:30 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] Remote employees using Polycom 501 lose
> abilityto receive incoming calls after few minutes.
>
> Von L. wrote:
> > plugged in. They work immediately after being plugged in, but they
> > lose the ability shortly thereafter. They can always make outbound
> > calls, but only to real phone numbers, not extensions.
> >
> > They each have NAT routers, and I have triple checked that they have
> > opened/forwarded the correct ports, basically 5060-30000 UDP. Once
> > they
>
>
> See the "NAT Issues" section at http://www.voip-info.org/wiki/view/IAX.
> (The page is for IAX2, but the NAT issues are relevant for UDP SIP ports
> too).
>
> Basically, some NAT routers "forget" UDP mappings after a VERY short time
> (like 30 seconds). Took me a while to figure that out.
>
>
> - Mike
>
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-- 
Alex Robar
alex.robar at gmail.com
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