asterisk users - Sep 2007 - HOWTO/FAQ question (Location: Sweden)

Sorry for this. This is most likely a HOWTO or FAQ question, but
it's so much information and documentation to wade through so
I hope someone could take a minute to answer anyway.

If not, no worries. I'll get to it sooner or later :)


I'm trying to understand what Asterisk actually is and the basic
workings... I think I've understand what I need to get going,
except one thing.

How do I connect to a 'normal' (i.e. analog) telephone? That is,
if my company/project have 100% IP telephony, but one of these
phones need to call a analog telephone in another company (or
if I need to call home for any reason :). What do I need from
the 'phone company'? And what hardware?

This is Sweden with Telia as provider if that matters.


DISCLAIMER1: I've read about BRI, PRI, E1/T1 etc, but the reason
             I'm all confused is that they (Telia) don't seem to
             understand the question, and also claims that a
             PRI == E1.
DISCLAIMER2: I've seen the Digium cards, but due to confusion with
             Telia, I'm not sure if I want/need a Digital or an
             Analog card... And 'how big'...

Turbo Fredriksson wrote:
> Sorry for this. This is most likely a HOWTO or FAQ question, but
> it's so much information and documentation to wade through so
> I hope someone could take a minute to answer anyway.
>
> If not, no worries. I'll get to it sooner or later :)
>
>
> I'm trying to understand what Asterisk actually is and the basic
> workings... I think I've understand what I need to get going,
> except one thing.
>
> How do I connect to a 'normal' (i.e. analog) telephone? That is,
> if my company/project have 100% IP telephony, but one of these
> phones need to call a analog telephone in another company (or
> if I need to call home for any reason :). What do I need from
> the 'phone company'? And what hardware?
>
>   
You need something to interconnect to your telco, this can be done on 
different ways:

- you can take a voip provider and not buy any hardware.
- you can use a TDM card and connect to a classic analog telephone line. 
(1 simultaneous call per port)
- you can use a BRI card and connect to a classic isdn line (You get 2 
lines per port this case)

If you need more capacity, (more than 2 simultaneous channels), just 
think PRI or PRA or E1 as one and the same thing. (30 simultaneous calls 
per port).

Zoa.
> This is Sweden with Telia as provider if that matters.
>
>
> DISCLAIMER1: I've read about BRI, PRI, E1/T1 etc, but the reason
>              I'm all confused is that they (Telia) don't seem to
>              understand the question, and also claims that a
>              PRI == E1.
> DISCLAIMER2: I've seen the Digium cards, but due to confusion with
>              Telia, I'm not sure if I want/need a Digital or an
>              Analog card... And 'how big'...
>
> _______________________________________________
>
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Hi,




On 9/25/07, Turbo Fredriksson <turbo at bayour.com>
wrote:
>
> Sorry for this. This is most likely a HOWTO or FAQ question, but
> it's so much information and documentation to wade through so
> I hope someone could take a minute to answer anyway.
>
> If not, no worries. I'll get to it sooner or later :)
>
>
> I'm trying to understand what Asterisk actually is and the basic
> workings... I think I've understand what I need to get going,
> except one thing.


asterisk is a IP-PBX system you can visit asterisk.org for more info or
voip-info.org.




How do I connect to a 'normal' (i.e. analog) telephone? That
is,
> if my company/project have 100% IP telephony, but one of these
> phones need to call a analog telephone in another company (or
> if I need to call home for any reason :). What do I need from
> the 'phone company'? And what hardware?
This is Sweden with Telia as provider if that matters.


IT depends with your provider, If they use analog TDM lines you'll be
needing Digium TDM400P or TDM2400P with fxo modules, If they can do digital
E1 PRI you can use  Digium TE120P(one E1 port), TE207P/TE212P(two E1 port),
TE407P/TE412P(four E1 port). Or for pci express cards either TE220P or
TE420. you can check digium.org for more details of this cards.


You can also use your analog phone devices either connect it through
ATA(Analog Telephony Adaptor) example are Linksys PAP2, Digium
TDM400P(4-port) with fxs module or TDM2400P (24-port) with fxs module.

DISCLAIMER1: I've read about BRI, PRI, E1/T1 etc, but the
reason
>              I'm all confused is that they (Telia) don't seem to
>              understand the question, and also claims that a
>              PRI == E1.

AFAIK PRI is the signalling for E1.



DISCLAIMER2: I've seen the Digium cards, but due to confusion
with
>              Telia, I'm not sure if I want/need a Digital or an
>              Analog card... And 'how big'...
if they said they can do PRI you'll be needing a Digium card. but if they
can use VOIP go with VOIP to save up from buying the hardware.


HTH


-- 
Regards,
Mark Quitoriano, CCNA

Fan the flame...
http://www.spreadfirefox.com/?q=user/register&r=19441
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