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Kielogl | 1 Jun 2008 02:13
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Asterisk and V.22bis

Hi,
 
I would like to send and receive data in Asterisk with a V.22bis (2400bps) software modem on a SIP or IAX channel. From research so far, it looks like IAXmodem will only support fax (no data support). The spandsp docs do mention V.22bis modem module, but I have not been able to find anything on how it might be used in Asterisk.
 
Any suggestions on where I could get more info on using spandsp to enable sending and recieving of V.22bis modem data in Asterisk?
 
Any other options I could use?
 
Thanks in advance,
 
Mark

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Rob Hillis | 1 Jun 2008 02:13
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Re: IAX2 hardware video phone

Joseph wrote:
> On 05/31/08 19:57, Rob Hillis wrote:
>   
>> Only one of the better known brands have a video phone that I'm aware 
>> of, and that's certainly not IAX2 compatible.  For that matter, none of 
>> the better known brands have a phone (video or otherwise) that is IAX2 
>> compatible.
>>     
> The only option I have seen is Grandstream GXV3000; it works with Asterisk but it is SIP phone. 
> So to traverse the firewall using "IAX2" I need to connect it to an internal asterisk box or make a "Swiss
cheese" 
> out of a firewall.
>   

It's the only one I'm aware of too, and having been bitten badly by the 
Grandstream's superior ability to crash, hang, stuff up phone calls and 
otherwise behave badly, the only recommendation I ever have for them is 
to NOT use them.  Whilst I haven't used a GXV3000 for long enough to 
know how much the Grandstream instability applies to this phone, I've 
had more than enough experience with GXP-2000s and BT200s.

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Joseph | 1 Jun 2008 05:27

Re: IAX2 hardware video phone

On 06/01/08 10:13, Rob Hillis wrote:
>> The only option I have seen is Grandstream GXV3000; it works with Asterisk but it is SIP phone. 
>> So to traverse the firewall using "IAX2" I need to connect it to an internal asterisk box or make a "Swiss
cheese" 
>> out of a firewall.
>>   
>
>It's the only one I'm aware of too, and having been bitten badly by the 
>Grandstream's superior ability to crash, hang, stuff up phone calls and 
>otherwise behave badly, the only recommendation I ever have for them is 
>to NOT use them.  Whilst I haven't used a GXV3000 for long enough to 
>know how much the Grandstream instability applies to this phone, I've 
>had more than enough experience with GXP-2000s and BT200s.

Thanks for the input.  
I've read some reviews and from what I've read the Video is OK but the voice quality is not impressive.
Is anybody using this model and can provide real life experience with GXV3000 model?	

--

-- 
#Joseph

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Steve Totaro | 1 Jun 2008 05:47

Re: IAX2 hardware video phone

On Sat, May 31, 2008 at 11:27 PM, Joseph <syscon <at> interbaun.com> wrote:
> On 06/01/08 10:13, Rob Hillis wrote:
>>> The only option I have seen is Grandstream GXV3000; it works with Asterisk but it is SIP phone.
>>> So to traverse the firewall using "IAX2" I need to connect it to an internal asterisk box or make a "Swiss cheese"
>>> out of a firewall.
>>>
>>
>>It's the only one I'm aware of too, and having been bitten badly by the
>>Grandstream's superior ability to crash, hang, stuff up phone calls and
>>otherwise behave badly, the only recommendation I ever have for them is
>>to NOT use them.  Whilst I haven't used a GXV3000 for long enough to
>>know how much the Grandstream instability applies to this phone, I've
>>had more than enough experience with GXP-2000s and BT200s.
>
> Thanks for the input.
> I've read some reviews and from what I've read the Video is OK but the voice quality is not impressive.
> Is anybody using this model and can provide real life experience with GXV3000 model?
>
> --
> #Joseph
>

A local Asterisk server is the best way to do this.  That being said,
the WRT54G and all of the other WiFi APs that can run dd-wrt or
Openwrt can actually be Asterisk servers.  I have done it but never
went so far as to register a single phone.  Not sure how it would
scale.

Question for Michael Graves (or anyone that can answer), I have two
big boxes of old HP thin clients.  What do you do to recycle them?

Thanks,
Steve Totaro

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Gordon Henderson | 1 Jun 2008 12:18
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Re: IAX2 hardware video phone

On Sat, 31 May 2008, Joseph wrote:

> On 06/01/08 10:13, Rob Hillis wrote:
>>> The only option I have seen is Grandstream GXV3000; it works with Asterisk but it is SIP phone.
>>> So to traverse the firewall using "IAX2" I need to connect it to an internal asterisk box or make a "Swiss cheese"
>>> out of a firewall.
>>>
>>
>> It's the only one I'm aware of too, and having been bitten badly by the
>> Grandstream's superior ability to crash, hang, stuff up phone calls and
>> otherwise behave badly, the only recommendation I ever have for them is
>> to NOT use them.  Whilst I haven't used a GXV3000 for long enough to
>> know how much the Grandstream instability applies to this phone, I've
>> had more than enough experience with GXP-2000s and BT200s.
>
> Thanks for the input.
> I've read some reviews and from what I've read the Video is OK but the voice quality is not impressive.
> Is anybody using this model and can provide real life experience with GXV3000 model?

I've not used the GXV3000 yet - but they are almost cheap enough in the UK 
for me to get a pair to "play"...

But I have installed several sites worth of GXP2000 and BT200 phones (and 
a few other minor Grandstream products) I quite like them - but they have 
had a bit of a bad rap in the past, and I think probably rightly so - 
early hardware was of questionable quality, and early software was 
similar. Audio quality is not the best, but it's more than adequate. One 
thing I've "learned" is to not put new software on very old hardware, but 
the newer hardware platforms have been solid for me - saying that, they're 
only in "modest" installations of between 20-40 phones on a site with 
"average" reception use on a GXP2000, and right now, I can't find a phone 
with the same feature level for the cost - I also find it hard where I 
live & work (rural england!) to persuade companies to spend more on better 
quality phones too, so that's another factor for me...

(So if you're in the UK and have a lot of Grandstream phones you're 
throwing out, I'll take them off your hands ;-)

Gordon

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Steve Underwood | 1 Jun 2008 13:14

Re: Asterisk and V.22bis

Kielogl wrote:
> Hi,
>  
> I would like to send and receive data in Asterisk with a V.22bis 
> (2400bps) software modem on a SIP or IAX channel. From research so 
> far, it looks like IAXmodem will only support fax (no data support). 
> The spandsp docs do mention V.22bis modem module, but I have not been 
> able to find anything on how it might be used in Asterisk.
>  
> Any suggestions on where I could get more info on using spandsp to 
> enable sending and recieving of V.22bis modem data in Asterisk?
>  
> Any other options I could use?
>  
> Thanks in advance,
>  
> Mark
>
I started the V.22bis modem in spandsp a long time ago, but I never 
finished it.

Steve

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Michael Graves | 1 Jun 2008 16:49
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Re: IAX2 hardware video phone

On Sat, 31 May 2008 23:47:50 -0400, Steve Totaro wrote:

>Question for Michael Graves (or anyone that can answer), I have two
>big boxes of old HP thin clients.  What do you do to recycle them?

Steve,

Nothing really. Perhaps "rescue" is the better term. 

A friend of mine used to work at a major broacast firm who was
decommissioning a system that used these items. Their corp IT policy
was to pay Dell to recycle anythign PC related. We merely saved tham
that expense.

In the case where the systems boot image had been modified by adding
licensed software it would be good to flash them back to their original
state just to be legal.

I had a dozen of these at one time. They make great little embedded
systems for Asterisk, m0n0wall, NTP servers, NAS hosts for backup, etc.
I've noticed that when available on Ebay they always fetch a decent
price, so demand is constant.

Michael
--
Michael Graves
mgraves<at>mstvp.com
http://blog.mgraves.org
o713-861-4005
c713-201-1262
sip:mjgraves <at> pixelpower.onsip.com
skype mjgraves
54245 <at> fwd.pulver.com

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SIP | 1 Jun 2008 17:45

Re: IAX2 hardware video phone

Joseph wrote:
> On 06/01/08 10:13, Rob Hillis wrote:
>   
>>> The only option I have seen is Grandstream GXV3000; it works with Asterisk but it is SIP phone. 
>>> So to traverse the firewall using "IAX2" I need to connect it to an internal asterisk box or make a "Swiss
cheese" 
>>> out of a firewall.
>>>   
>>>       
>> It's the only one I'm aware of too, and having been bitten badly by the 
>> Grandstream's superior ability to crash, hang, stuff up phone calls and 
>> otherwise behave badly, the only recommendation I ever have for them is 
>> to NOT use them.  Whilst I haven't used a GXV3000 for long enough to 
>> know how much the Grandstream instability applies to this phone, I've 
>> had more than enough experience with GXP-2000s and BT200s.
>>     
>
> Thanks for the input.  
> I've read some reviews and from what I've read the Video is OK but the voice quality is not impressive.
> Is anybody using this model and can provide real life experience with GXV3000 model?	
>
>   
We've got some GXV3000s around.  Overall, the voice quality isn't bad. 
It's no Polycom, but it's as good as the rest of the Grandstream line -- 
no better, no worse. Video quality is actually excellent, and it's a 
nice design.

The firmware, however, has Grandstream's usual issues and bugs.  The 
biggest one that annoys us is that the screensaver for the LCD works 
when you boot up the phone. However, after the phone rings, the 
screensaver turns off and won't work again until you reboot the phone.

It also suffers the same issues with most of the Grandstream's regarding 
NAT. They seem to be unable to do a keep-alive through a firewall to 
keep a proper port open, so they'll routinely lose their RTP streams 
after a short period of active time. We've had to port-forward incoming 
RTP ports directly to the inside Grandstreams, which makes DHCP 
unusable. However, that did solve the RTP issues.

We've had that issues with all the Grandstreams, though.

Our staple phones are still Snom 320s. Inexpensive, durable, and 
reliable. But no video.

N.

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Joseph | 1 Jun 2008 18:27

Re: IAX2 hardware video phone

On 05/31/08 23:47, Steve Totaro wrote:
>A local Asterisk server is the best way to do this.  That being said,
>the WRT54G and all of the other WiFi APs that can run dd-wrt or
>Openwrt can actually be Asterisk servers.  I have done it but never
>went so far as to register a single phone.  Not sure how it would
>scale.

I actually have WRT54GL running WhiteRussina on it with some graphical interface; I've added 1GB SD card to
it 
but it seems to me there is not enough room for asterisk.  The files are being installed into main memory not SD 
card.
Is anybody running Asterisk on WRT54GL?

>
>Question for Michael Graves (or anyone that can answer), I have two
>big boxes of old HP thin clients.  What do you do to recycle them?

You can turn them into a firewall.

--

-- 
#Joseph

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michael_t Gazeta.pl | 1 Jun 2008 19:26
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Mysql and extensions.conf

Hi,
I have MySql server with database and need to make extensions conf letting calls through if database field equals 1 and not if it is 0. Database is ready but I'm haveing problem with extensions.conf. Don't want to involve any high tech scripts just simple solution. If someone can help me with my problem it would be great.
Thankyou.
Michael.

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