You might find your internal firewall may have an issue as well passing
audio if it cannot do symmetrical NAT (which I doubt).

So once you get DNS setup where the phones will register you should try
making a call and if you get no (or one-way audio), you should stop and
address the firewall piece.

If it were me (and it is not), I would see if I could set the verizon modem
to "bridged" mode and put a compatible firewall in. I say this because in
looking through the fios devices of that model, I see nothing which
encourages me that this is something that has the guts to work in the way
that is needed, but is fine for a remote site.

On Thu, Jul 15, 2010 at 3:55 AM, Paul Scheepens <[email protected]> wrote:

> Gary Luca <[email protected]> wrote on 15-07-2010 05:02:40:
>
> > Ok. So I just got a whole TON of replies with questions to answer.  Here
> goes:
> >
> > Nathaniel...
> >
> > DNS/DHCP at the remote site are handled by the Westell ADSL2 modem.
> >  It deals out just IP, Subnet mask, gateway (itself) and DNS (also
> > itself).  DNS relays to what I imagine are Verizon DNS servers.  The
> > relavent DNS records on the local network (in Microsoft DNS Server)
> > are as follows:
> >
> > spadafora4senate.com
> >      mal-pbx (A) 172.16.17.45
> >      spadafora4senate.com (NAPTR) [2][0][S][SIP+D2U]<Reg Exp>[_sip._
> > udp.spadafora4senate.com.]
> >      spadafora4senate.com (NAPTR) [2][0][S][SIP+D2T]<Reg Exp>[_sip._
> > tcp.spadafora4senate.com.]
>
> As far as I know you can skip the NAPTR's, I have been running without them
> for years.
>
> >
> > _tcp.spadafora4senate.com
> >      _sip (SRV) [200][1][5060] mal-pbx.spadafora4senate.com.
> >      _sips (SRV) [300][1][5060] mal-pbx.spadafora4senate.com.
> >
> > _udp.spadafora4senate.com
> >      _sip (SRV) [100][1][5060] mal-pbx.spadafora4senate.com.
> >
>
> These are the DNS records you use on the central site, that's why your
> Polycoms work locally.
> You need something similar on the remote site, that's what's missing.
>
> > Doug...
> >
> > Thank you for the link regarding FTP.  Do you know of any place
> > where I can find detailed instructions on how precisely to configure
> > sipX for whatever it needs in order for FTP to work for phone
> > provisioning?  On the local network I use TFTP, which I don't mind
> > because it is a secure network.  For the REMOTES i'd rather use FTP
> > as it incorporates authentication.
> >
> > Tony...
> >
> > I actually thought it WAS a DNS issue for a while.  I looked through
> > the wiki and everything I could find about DNS considerations for
> > sipX and nothing mentioned anything about external DNS (that I could
> > see).  So, being fairly new to the SIP world, I assumed the only
> > resolution that had to be done by the remote phone was in regards to
> > the Outgoing Proxy.  I figured it just contacted the Outgoing Proxy
> > and that acted as the middle man for everything, not requiring the
> > phone to have to do any other DNS resolution or anything.  The
> > proxy, being on the local network, would resolve everything to the
> > local DNS and just make everything work for the remote user.  It
> > seemed to make sense, but my limited knowledge of the inner workings
> > of the relationship between the remote, the proxy, and the registrar
> > left me without a DEFINITE answer.
> >
> > So at that point, with the phones just NOT registering at all, it
> > was clear that it could be ANYTHING.  My sipX config could be wrong.
> >  I could have screwed something up with the NAT traversal features.
> >  It could have been a DNS issue.  It could have been a phone issue.
> >  So I had to narrow it down.  That's when I installed x-lite.  And
> > within like a MINUTE, I had it connected to sipX and able to make
> > and receive calls.  There was NO VPN involved or anything.  Just
> > straight over the internet through a NAT on both ends.  Here are the
> > settings I used:
> >
> > General
> >      User ID: x703
> >      Domain: spadafora4senate.com
> >      Password: *********
> >      Display name: Gary Luca
> >      Authorization name: [blank]
> >
> >      Register with domain and receive calls: [checked]
> >      Send outbound via: Proxy - Address: myhostname.no-ip.org
>
> Get x-lite working without "Send outbound via Proxy".
> By enabling "Send outbound via Proxy" x-lite will register via the A record
> of myhostname.no-ip.org.
> If "Send outbound via Proxy" is disabled x-lite will try to resolve the SRV
> records for spadafora4senate.com (or was that spada4a4senate.com ;-)
> This is also the method the Polycom's will use.
>
> Now you need to create the corresponding SRV records somewhere so that
> x-lite and polycoms on the remote site can register via SRV records:
>
> _tcp.spadafora4senate.com
>       _sip (SRV) [200][1][5060] myhostname.no-ip.org
>       _sips (SRV) [300][1][5060] myhostname.no-ip.org
>
> _udp.spadafora4senate.com
>       _sip (SRV) [100][1][5060] myhostname.no-ip.org
>
> This can be done by defining the SRV records on your internet dns-server
> (ISP)
> or setting up a DNS at the remote site or ... I don't know your setup
> enough to give the best advise.
>
> >      Dial plan: #1\a\a.T;match=1;prestrip=2;
> >
> > Topology
> >      IP Address: Use local IP address
> >      STUN Server: Discover server
> >      Enable ICE: [unchecked]
> >
> >      Manually specify range: [unchecked]
>
> I think this is the port range (don't have x-lite running), normally the
> port range
> is limited to keep the firewall rules simple and not too open.
> It is normally limited to ports 30000-31000, a smaller range is also
> possible.
>
> >
> > Presence
> >      Mode: Peer-to-peer
> >      Poll time: 300
> >      Refresh interval: 3600
> >
> > Transport
> >      Signaling transport: UDP
> >
> > Advanced
> >      Reregister every: 3600 seconds
> >      Minimum time: 20 seconds
> >      Maximum time: 1800 seconds
> >
> >      Enable session timers: [unchecked]
> >
> >      Send SIP keep-alives: [checked]
> >      Use rport: [checked]
> >      Send outgoing request directly to target: [checked]
> >
> > So if what I assuming about the proxy being the middle man is wrong
> > and what you are saying about the remote needing to resolve the SRVs
> > itself is correct, then I have absolutely NO idea why x-lite is
> > working.  But it is.  If you want to email me directly (outside of
> > the list), I'll even set you up with a test user on my system so you
> > can configure x-lite or any other manually configured phone (soft or
> > hard) and evaluate the results.
> >
> > Dale...
> >
> > The phone doesn't list in the Registrations page. On the phone
> > interface, the little "phone" icon next to each of the two line
> > buttons is "hollow" indicating that the line did not register (not
> > sure how familiar you are with the Polycom display).  Calls to the
> > phone fail to make it ring.
> >
> > Thank you all.  Let me know if I can clarify anything further.  I
> > look forward to your thoughts
> >
> > -G
> >
> >
> >
> > --
> > Gary J. Luca Jr.
> >
> > 781-333-8087
> > http://www.linkedin.com/in/garylukes
>
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> > sipXecs IP PBX -- http://www.sipfoundry.org/
>
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>



-- 
======================
Tony Graziano, Manager
Telephone: 434.984.8430
sip: [email protected]
Fax: 434.984.8431

Email: [email protected]

LAN/Telephony/Security and Control Systems Helpdesk:
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sip: [email protected]
Fax: 434.984.8427

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Why do mathematicians always confuse Halloween and Christmas?
Because 31 Oct = 25 Dec.
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