[Freeswitch-users] external inbound sip call questions

[Godson Gera]

You can always connect to your external SIP provider by configuring it as
gateway in sofia profile and register on to that provider.

http://wiki.freeswitch.org/wiki/Clarification:gateways

also look at this parameter


<!--send an options ping every x seconds, failure will unregister and/or
mark it down-->
<!--<param name="ping" value="25"/>-->
So that hole punching thing is taken care of .


-- 
Godson Gera
IVR India <http://godson.in/ivr>


On Sat, Feb 18, 2012 at 12:14 AM, Josh <mojo1736 at privatedemail.net> wrote:

> A few questions to all knowledgeable heads out there: Everything I read
> so far about how to set up and configure my FS external sip profile
> tells me that I need to have IP address/interface and port (default
> being 5080) to bind to in order to receive inbound calls via the
> external sip profile.
>
> Is that really the case? Is this the only way I could receive such calls?
>
> The reason I am asking is this: my Internet-facing interface cannot
> receive calls (or any connections from outside) unless it initiates
> these connection first, simply because my ISP is blocking "server"
> connections (i.e. connections initiated from outside, destined to my IP
> address/interface). If my Internet-facing machine initiates the
> connection first (therefore punching a "hole" through the ISPs
> firewall), then that's allowed - no restrictions of any sort are applied
> by my ISP.
>
> So, I guess what I am asking is this: Is it possible to configure my
> external sip profile in FS in such a way so that it does not listen to a
> particular interface:port in order to receive external sip calls, but to
> use the control channel/connection established to my external SIP
> provider (on sip provider's IP address and port 5060) in order to find
> out which ports to use and initiate rtp connections on my machine,
> instead of waiting for such connections on a specific port? As I already
> pointed out above - such connections initiated from outside will be
> blocked by my ISP, but if these are started from my machine they will be
> allowed, no problem.
>
> Hope I am making myself clear with this. Many thanks!
>
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