Re: Multiple SIP Clients?

"Anthony R. Gold" <not-for-mail@ahjg.co.uk> wrote in message
news:1c4317da6sn9o88h74dok4v5lggr67u9rr@4ax.com...
> On Mon, 4 Jul 2011 10:00:54 +0000 (UTC), Roger Burton West
> <roger+utv201107@nospam.firedrake.org> wrote:
>
>> Anthony R. Gold wrote:
>>
>>> What equipment is suitable for receiving incoming calls from multiple
>>> service
>>> providers?
>>
>> Don't use an appliance, use a proper computer as your proxy. Asterisk
>> and its open-source competition can all trivially do what's needed, and
>> forward calls to your actual SIP devices.
>
> I believe would be neither suitable nor safe. I travel a great deal and,
> even
> if I was willing to learn enough to install and configure such I system, I
> could never allow all of my incoming phone calls to depend on the good
> behaviour of a PC and its Internet access when those are installed many
> thousands of miles away. I might consider using a hosted service, but I
> hope
> that will not be necessary for my very simple needs. An appliance will be
> just fine thanks.

I use a DrayTek Vigor2820Vn (V=VoIP, n=wireless n) which handles/registers
upto 12 SIP accounts for both incoming and outgoing calls (although only 2
simultaneous SIP/VoIP calls can take place due to there being 2 physical
ports).

This is a DSL modem router with additional WAN access via an ethernet port
and 3G via a USB port, although there are other variations in the DrayTek
range.

It has a simple dial plan with similar features to those described in this
thread by Roger regarding his Fritz!Box, plus a few more.

Rob

"Rob" <nobody@this.place.invalid> wrote in message
news:wLGdnXXCV-ZMSI_TnZ2dnUVZ7tKdnZ2d@brightview.co.uk...
>
> "Anthony R. Gold" <not-for-mail@ahjg.co.uk> wrote in message
> news:1c4317da6sn9o88h74dok4v5lggr67u9rr@4ax.com...
>> On Mon, 4 Jul 2011 10:00:54 +0000 (UTC), Roger Burton West
>> <roger+utv201107@nospam.firedrake.org> wrote:
>>
>>> Anthony R. Gold wrote:
>>>
>>>> What equipment is suitable for receiving incoming calls from multiple
>>>> service
>>>> providers?
>>>
>>> Don't use an appliance, use a proper computer as your proxy. Asterisk
>>> and its open-source competition can all trivially do what's needed, and
>>> forward calls to your actual SIP devices.
>>
>> I believe would be neither suitable nor safe. I travel a great deal and,
>> even
>> if I was willing to learn enough to install and configure such I system,
>> I
>> could never allow all of my incoming phone calls to depend on the good
>> behaviour of a PC and its Internet access when those are installed many
>> thousands of miles away. I might consider using a hosted service, but I
>> hope
>> that will not be necessary for my very simple needs. An appliance will be
>> just fine thanks.
>
> I use a DrayTek Vigor2820Vn (V=VoIP, n=wireless n) which handles/registers
> upto 12 SIP accounts for both incoming and outgoing calls (although only 2
> simultaneous SIP/VoIP calls can take place due to there being 2 physical
> ports).
>
> This is a DSL modem router with additional WAN access via an ethernet port
> and 3G via a USB port, although there are other variations in the DrayTek
> range.
>
> It has a simple dial plan with similar features to those described in this
> thread by Roger regarding his Fritz!Box, plus a few more.
>
> Rob

PS

I didn't make it clear in my previous post that all 12 accounts can be from
different providers, not just multiple accounts from a smaller number as
some devices do.

Rob

"Anthony R. Gold" <not-for-mail@ahjg.co.uk> wrote in message
news:nto517hk97pk3bbc0fsqppv3spe879s5o5@4ax.com...

>
> Maybe the Vigorphone 350 will do what I need. The spec mentions "You can
> configure settings for up to ten SIP accounts with different SIP proxy."
> but
> because of the In/Out ambiguity I must check whether that means the
> ability
> to sit waiting simultaneously for rings from ten possible service
> providers.

I just had a very quick look at the User Guide and I think it looks like a
handy piece of kit, I wouldn't mind having one to play with! It would
certainly seem to be more handy to travel with than a router and separate
phone!

As far as the dialplan goes it looks like it works along broadly similar
lines to the Vigor Vx routers I have owned, first the 2800VG now the 2820Vn.
Basically with the DrayTeks the dialplan is setup via 'Digit map', whilst
regular calls which are made to SIP URIs can be stored in the 'Phone Book'
thereby avoiding the need to key in long strings, instead you give them a
short number (2,3,4 digits or whatever).

Regarding the SIP accounts, that looks to work in the same way as the
routers I have used. You enter the settings for all the accounts (up to the
max of 10) you wish to use and that's it. Any of them can be used for
dialling out or receiving calls.

I don't what the phones capabilities are regarding calls coming in on
another SIP account when the handset is in use (call waiting ?). Obviously
with the 2 physical ports I have on my router with 2 sets of phones
connected I have more flexibility in that area.

Rob

"Anthony R. Gold" <not-for-mail@ahjg.co.uk> wrote in message
news:jil517pcsocdhh630mqos6ko0ln4cdiisd@4ax.com...
> On Tue, 5 Jul 2011 10:14:35 +0100, "Rob" <nobody@this.place.invalid>
> wrote:
>
>> I use a DrayTek Vigor2820Vn (V=VoIP, n=wireless n) which
>> handles/registers
>> upto 12 SIP accounts for both incoming and outgoing calls (although only
>> 2
>> simultaneous SIP/VoIP calls can take place due to there being 2 physical
>> ports).
>
> Many thanks. I use both 2820 and 2920 (non-modem) routers in different
> locations for their dual WAN capabilities. Upgrading to VOIP versions may
> answer my needs if I can't find the capability in cheaper add-on
> equipment.
>


Hi,


I think short or summary version for you (so far) is:

- FritzBox
- DrayTek
- other examples

This area is frequently intentionally relatively unclear, with the genuine
quality appliance vendors doing the darnedest to clearly identify and
indicate the great(er) capacity of their devices (multiple sip accounts /
proxy registrations - both in and out bound). However, equally other lesser
vendors / devices mix their claims to mask their shortcomings (mixing up
terminology or using "half claims", etc.). This does make it hard to be sure
and identify the true operation and capability of other lesser known, new or
unknown devices. If you can stomach the manual research (ordering trial or
test units from manufacturers, etc. if necessary), then you will find a
plethora of devices providing all such features and functions as you seek at
very competitive prices (e.g. alibaba.com).

Often the second fiddle of fun with these tools, toys or devices, is their
configurability or lack of; and / or ongoing support, fixes and updates!

Good luck! Easy option I think is go with a medium-low end range known
vendor as a number of posters have hopefully helpfully pointed out(,
suggested or indicated!) (as[listed] above).


Best wishes,




News Reader

Anthony R. Gold wrote:

> because of the In/Out ambiguity I must check whether that means the ability
> to sit waiting simultaneously for rings from ten possible service providers.

As I said before, most devices can wait listening for incoming calls
from arbitrarily large numbers of possibly unknown callers. If exposed
to the internet they even pick up calls from people trying to hack into
SIP PABXes. Real SIP like real SMTP is peer to peer, even if everyone
uses it through a central hub (including for security reasons).

The limitation you have is not on how many things can connect calls to
but on how many things to which it can tell them how to reach it.

I'd have to check the SIP specification, but I'm pretty sure that you
can have a box that acts as a third party to register other boxes. I
don't think you can do this with Asterisk, because it doesn't allow the
host part of the registered device to be controlled.