Could you remind me again why you couldn't use something like an Ingate 
to do the translation for you? It's been a while since you posted and my 
memory isn't that good.

Also, the commercial system you are describing almost sounds like an 
Alcatel. I thought Alcatel's configuration UI was atrocious but I really 
liked their phones.

Josh Patten
Assistant Network Administrator
Brazos County IT Dept.
(979) 361-4676


On 3/15/2010 2:06 PM, Andrew Cotter wrote:
> So I have finally gotten word from AT&T labs that they will not be able to
> support SipX and fix our transfer issue.
>
> We have a SIP handoff that is direct (switch in the middle) from their Cisco
> router onsite.  I asked for them to send signaling on port 5080 (sipXbridge)
> but that was a no go.  Then I asked if they can do some sort of NAT
> translation for incoming data from their end, through the router, and into
> port 5080.  Again, no go as they tested this in the labs.  B2BUA on the
> Cisco, nope.
>
> So... I am left with probably having to leave my sipX setup, that I have
> come to know and love, behind.
>
> A final question for the masses:
>
> Would having AT&T swap out the SIP handoff for a PRI handoff potentially fix
> my transfer issues if I put a gateway in?  If this would work and I can
> convince AT&T to convert the SIP handoff to a PRI handoff, what solution
> would you suggest (patton, audiocodes, etc.) to handle a single PRI.  I have
> 4 sites spread throughout the US and would need something fairly cost
> effective for 2 of them since there are 5 or less employees at those sites.
> I am sure I will have more questions if people come back saying this might
> resolve the issues.
>
>
> Parting thoughts.
> In light of the position I am now in I am forced to begin to look elsewhere
> at commercial products.  I wanted to share my thoughts on the comparison of
> sipx and a well known commercial product out there.  After getting a demo of
> one solution that the salesperson was touting as an extremely easy
> interface, so simple a cave man can set it up, I was amazed at how much I
> was left desiring the simplicity of SipX.  The screens were cluttered, the
> interface was fairly well organized, but the voicemail and admin console
> still resided on a windows machine.  Not what I want.
>
> Yes it was a nice system in terms of failover and distribution, but they
> pretty much insist that we swap out our phones (polycom) for their own
> phones.  Also, for a VoIP system they almost left me speechless when they
> said I could only use one SIP trunk provider unless I bought an InGate.
> VoIP... SIP...  Won't support it?  Wow!  Don't even get me started on the
> Windows application or the Outlook piece that I repeatedly told them we
> would not be using.
>
> Thank you again for everyone's help and suggestions over the past month in
> trying to make this work.  If I can slip in a plug for the project during my
> talk at the Computerworld OSBC later this week I will.
>
>
> Andrew
>
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