Hy
I have bought a VOIP Phone (SIP), and on the instructionthey say that
I can call an IP NUmber. What must i dial if the softphone is ona a
LAN ?
Thanks for any help
Joseph

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"Brandy" <gbrandy@libero.it> wrote in message
 news:c35is1psjpqtgqpovr87jii3ddjk0oqvl4@
4ax.com...
> Hy
> I have bought a VOIP Phone (SIP), and on the instructionthey say that
> I can call an IP NUmber. What must i dial if the softphone is ona a
> LAN ?
> Thanks for any help
> Joseph

What type of phone (make etc)?

Which softphone?

More details......?

Often you would dial the IP address of the softphone thus:
192*168*1*2 (where starts/asterisks represent the dot.)

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Yes. You need to know the IP address of the router / computer, i.e. as seen
from the internet,
(not the LAN address e.g. 192.168.1.11 as Jono suggested). Your
correspondent will need to have working SIP
device (softphone running), and with correct forwarded ports.
If you correspondent hasn't got a static IP, you will need to obtain it
every time before making the call :-(
When dialling use * instead of . and usually prefix and finish with # (this
may differ with your equipment).
Thus for 123.45.78.90 you dial #123*45*78*90#

Please note that softphones provided by Finarea - Voipbuster etc. as yet
don't accept incoming calls, and when they do they may not work by IP number
(?).
HTH
Regards,
Martin

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On Sun, 15 Jan 2006 02:37:51 -0000, "Martin²" <never@give.one> wrote:

>If you correspondent hasn't got a static IP, you will need to obtain it
>every time before making the call :-(
So, would the use of something like http://www.dyndns.com/ be of use
here?

Remove 'no_spam_' from email address.

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"Tim Bray" <nutnews@kooky.org> wrote in message
news:43cb8bcd$0$87295$bed64819@news.gradwell.net
> Brian A wrote: 
>
> Yes, but it negates the whole benefit of SIP.
>
> That being that your network location is tracked by SIP
> registration.
>
> Tim

Why is it of benefit that my location is tracked..?

Ivor

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"Paul Hayes" <paul@nomail.org> wrote in message
news:43cbb75d$0$87295$5a6aecb4@news.aaisp.net.uk
> Ivor Jones wrote:

[snip]
 
>
> So you don't have to care what your IP address is.  Just
> like you wouldn't use an IP address instead of an email
> address.  If you tell everyone your IP address & then go
> away on a business trip, no one will be able to call you
> unless you tell them all your new IP address while you
> are away.
> The whole idea is that you are reachable at one SIP
> address no matter where in the world you happen to be at
> that time.

I can do that now without having to use dyndns. I plug my ATA into the
nearest ADSL-equipped router and it works. They dial my phone number and
it rings. People call me with phone numbers, not IP addresses.

Ivor

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"Tim Bray" <nutnews@kooky.org> wrote in message
news:43cbccdb$0$87299$bed64819@news.gradwell.net
> Ivor Jones wrote: 
>
> Because your ATA does a SIP REGISTER with the service
> provider.

Exactly. So why bother mucking about with IP addresses..?

Ivor

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Ivor Jones wrote:

> Exactly. So why bother mucking about with IP addresses..?

If you and your correspondent both have SIP devices, but are using
different, and non peering, VoIP providers, you can still make FREE calls
using your IP addresses.
Obviously, if they are not static, that makes it slightly more difficult,
but as suggested http://www.dyndns.com/
is one solution.
Regards,
Martin

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Ivor Jones wrote:

> "Paul Hayes" <paul@nomail.org> wrote in message
> news:43cbb75d$0$87295$5a6aecb4@news.aaisp.net.uk
 
>
> I can do that now without having to use dyndns. I plug my ATA into the
> nearest ADSL-equipped router and it works. They dial my phone number and
> it rings. People call me with phone numbers, not IP addresses.

But that's not what the OP is asking for.

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Tim Bray wrote:

> Ivor Jones wrote:
> 
>
> There's no reason to.  I didn't say it was a good idea.
>
> Infact, dialing by IP address is not supported if you read the RFC.

From RFC 2543:

...
#1.4.1 SIP Addressing
#
#   The "objects" addressed by SIP are users at hosts, identified by a
#   SIP URL. The SIP URL takes a form similar to a mailto or telnet URL,
#   i.e., user@host.  The user part is a user name or a telephone number.
#   The host part is either a domain name or a numeric network address.
...

and also:

...
#1.4.2 Locating a SIP Server
...
#   The client tries to find one or more addresses for the SIP server by
#   querying DNS. The procedure is as follows:
#
#        1.   If the host portion of the Request-URI is an IP address,
#             the client contacts the server at the given address.
#             Otherwise, the client proceeds to the next step.
#
#        2.   The client queries the DNS server for address records for
#             the host portion of the Request-URI. If the DNS server
#             returns no address records, the client stops, as it has
#             been unable to locate a server. By address record, we mean
#             A RR's, AAAA RR's, or other similar address records, chosen
#             according to the client's network protocol capabilities.
...

In my humble interpretation, the RFC does not suggest that dialling by IP
address is 'not supported'. I'll admit I've only skimmed the RFC, perhaps
you can point to a section of the RFC[s] that suggests that dialling by 
IP
address is 'not supported'? I would imagine that if the SIP RFC was going
to say that a SIP implelentation that allowed 'dialling' by IP address was
non-compliant, it would say so in the 'SIP Addressing' section if anywhere.

alexd
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