asterisk users - Mar 2010 - Do i really need Dahdi and Libpri.

On Sun, Mar 21, 2010 at 1:30 PM, Daniel Leite de Abreu
<dlabreu at gmail.com> wrote:
> Hy guys i am having so much hard time to setup asterisk on a virtual
machine that i got , i just want to know if i really need to use Dahdi and
libpri on a complete Digital PBX i just gonna use sip and iax.
> I will never use any kind of analog line on this machine.
No, you don't need these.

/r

In that case, you need neither of them.

On 03/21/2010 08:30 AM, Daniel Leite de Abreu wrote:
> Hy guys i am having so much hard time to setup asterisk on a virtual
machine that i got , i just want to know if i really need to use Dahdi and
libpri on a complete Digital PBX i just gonna use sip and iax.
> I will never use any kind of analog line on this machine.
>
> Wait for a feed back.
>
>
> Daniel Abreu.

-- 
Alex Balashov - Principal
Evariste Systems LLC

Tel    : +1 678-954-0670
Direct : +1 678-954-0671
Web    : http://www.evaristesys.com/

On Sun, Mar 21, 2010 at 12:30:01PM +0000, Daniel Leite de Abreu
wrote:
> Hy guys i am having so much hard time to setup asterisk on a virtual
machine that i got , i just want to know if i really need to use Dahdi and
libpri on a complete Digital PBX i just gonna use sip and iax.
> I will never use any kind of analog line on this machine.
You don't need libpri.

DAHDI may be useful as a timing source and as a mixing source for
meetme. Alternatives for those also depend on your kernel version and
version of Asterisk.

-- 
               Tzafrir Cohen
icq#16849755              jabber:tzafrir.cohen at xorcom.com
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir

On Sun, 21 Mar 2010, Daniel Leite de Abreu wrote:
> Hy guys i am having so much hard time to setup asterisk on a virtual 
> machine that i got , i just want to know if i really need to use Dahdi 
> and libpri on a complete Digital PBX i just gonna use sip and iax. I 
> will never use any kind of analog line on this machine.
You'll never need libpri unless you have hardware that needs that sort of 
support.

As for DHADI or Zaptel - You'll need a timing source such as dahdi_dummy 
or ztdummy if you are using MeetMe or IAX Trunks and don't have any timing 
hardware.

Gordon

Virtual machine will not be able to access dahdi hardware anyways (don't
know about KVMs though) but for conferencing you do need it, disabling all
the other hardware info in its config and enabling ztdummy only. Libpri you
can ignore. Config I am refering to in 1.4 versions was
/etc/sysconfig/zaptel, don't know about 1.6.

On 2010-03-21 6:58 AM, "Tzafrir Cohen" <tzafrir.cohen at
xorcom.com> wrote:

On Sun, Mar 21, 2010 at 12:48:27PM +0000, Daniel Leite de Abreu
wrote:
> even if i am using iax trun...
IAX trunking does require Asterisk to have a source of timing. Up until
1.6.0 this requires DAHDI. As of 1.6.1 there is a difefrent source of
timing. Though res_timing_pthread is considered not as good as DAHDI.

As of 1.6.2 you have res_timing_timerfd, which is as good as DAHDI
(or better) but requires kernel >= 2.6.27 IIRC.


-- 
Tzafrir Cohen
icq#16849755 jabber:tzafrir.cohen at xorcom.com<jabber%3Atzafrir.cohen at
xorcom.com>
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Hy guys i am having so much hard time to setup asterisk on a virtual machine
that i got , i just want to know if i really need to use Dahdi and libpri on a
complete Digital PBX i just gonna use sip and iax.
I will never use any kind of analog line on this machine.

Wait for a feed back.


Daniel Abreu.

Good to know. I'll try that. I needed such solution for a client few months
ago.

On 2010-03-21 6:06 PM, "Gordon Henderson"
<gordon+asterisk at drogon.net<gordon%2Basterisk at drogon.net>>
wrote:

On Sun, 21 Mar 2010, Zeeshan Zakaria wrote:
> Virtual machine will not be able to access dahdi hard...
It will depend on the virtualisation technology you use... I'm currently
using LXC and can easily give a container full hardware access if
required. Certianly no issues with dahdi_dummy...

Gordon

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