[asterisk-users] SIP multi Bindport

[Anselm Martin Hoffmeister]

Am Montag, den 29.10.2007, 15:54 +0000 schrieb Gordon Henderson:
> On Mon, 29 Oct 2007, Abdul wrote:
> 
> > Hi,
> >
> > Is it possible to have multi listening bindport  in asterisk?
> >
> > Now days mostly ISPs are Blocking the standard 5060 port so we want to 
> > keep option if 5060 is blocked we can ask our customers to use another 
> > port.
> 
> Really?
> 
> What country?? What ISP?
> 
> This isn't my experience in the UK .. (yet???)

Hi Gordon,

I have heard of SIP/VoIP port blocking in certain Asian regions. I think
in India the phone market regulations are in favour of their local "Ma
Bell" company who wants to sell minutes, not transport cheap VoIP
packets over DSL.

I think I read about one of the states of the Arabic peninsula that
their jurisdiction forbade any kind of communication that might be
considered "encrypted" or "untraceable". Tracing SIP is considered more
difficult than wiretapping an analogue line copper pair, figures.

I have been told by a friend of mine whose husband-to-be is in Shanghai
for a few weeks that VoIP is not restricted there - contrary to the
common assumption that the Chinese digital wall is airtight. There might
exist restricions in Internet access in rural areas, or for locals
(opposed to foreign tourists and workers).

There are other regions and legislatures that might prefer strong
control of international communications (not necessarily those called
"Axis of Evil"). When I was a child, most of the letters I got from my
"eastern" aunt were "inspected", and older locals know of line noises
from technologically outdated wiretapping equipment used by the Stasi-
might be legends though. I once visited her, crossing the Iron curtain
was an intimidating experience for a young boy, even with his father at
his side (although other things of the then-East German Republic stuck
more in my mind). I am quite glad we can mostly say publically what we
think appropriate nowadays.

Locals of those countries concerned will know better than me, possibly
they are not interested in Asterisk though because of the obvious
(legally or technically mandated) uselessness. You might check where
those people asking about OpenVPN/Sip combination are from ;-)

<fiction>
If and once the more restrictive politicians take control and realize
their personal idea of "1984", you surely will also notice the
telecommunications regulations, that according to MINITRUTH, will have
been there all the time. I am positive they will also cover the
"airstrip one" region of Oceania, so don't run, they will come for you.
(Orwell's 1984 was one of my final exam topics at high school)
</fiction>

Coming back to reality I wish you a nice evening.

Best regards
Anselm

*Wait, there's someone on the door, I !"%$§)(A/SCNR!)"(/§ CARRIER LOST