asterisk users - Feb 2005 - Newbie: ISDN E1 the same in all countries?

Hi.

I'm looking at ordering a 30-channel ISDN connection from telia (a swedish
operator) and then using a Wildcard TE110P card with that and asterisk to do
IVR. 

Can I be certain that the TE110P card will work with that ISDN connection? A
30 channel ISDN certainly sounds like an E1 connection, but I couldn't get
any clear answers from the operator if

it is.

Has anyone used the TE110P card in Sweden with telia?

 

Thanks

/sverrir

 

 

 

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On Fri, 11 Feb 2005, Sverrir Valgeirsson wrote:
> I'm looking at ordering a 30-channel ISDN connection from telia (a
swedish
> operator) and then using a Wildcard TE110P card with that and asterisk to
do
> IVR. 
> 
> Can I be certain that the TE110P card will work with that ISDN connection?
A
> 30 channel ISDN certainly sounds like an E1 connection, but I couldn't
get
> any clear answers from the operator if
> it is.
An 30-channel isdn PRI is always delivered over E1 (or perhaps several 
aggregated into an E3 or similar). However, an E1 can be delivered over 
two phisucal interfaces, 75 ohm unbalanced coaxial cables terminated in 
two BNC connectors or as an 120 ohm balanced twisted pair terminated in an 
RJ45 connector. You want to order the later.

The TE410P works well in Sweden so the TE110P should as well.

The implementation notes that specify the isdn interfaces on the Telia 
network are available from http://www.skanova.se/index.asp?lev=1636.

Remember that there are lots of options on isdn. Unless you are familiar 
with isdn telephony yourself you may consider getting some help in 
ordering the line and setting up your system.

Peter

Sverrir,

30 channel ISDN (generally known as primary rate ISDN, PRI) is a layer 
that runs on top of E1, just as Internet Protocol can run over Ethernet.

I haven't personally worked with Telia PRIs, but have with many other 
telcos throughout Europe, and they're all very similar with only minor 
software configuration variations between them. I would be amazed if 
Telia were any different. You should be pretty safe with this configuration.

Alistair Cunningham,
Integrics Ltd,
Telephony, Database, Unix consulting worldwide
+44 (0)7870 699 479
http://integrics.com/


Sverrir Valgeirsson wrote:
> Hi.
> 
> I?m looking at ordering a 30-channel ISDN connection from telia (a 
> swedish operator) and then using a Wildcard TE110P card with that and 
> asterisk to do IVR.
> 
> Can I be certain that the TE110P card will work with that ISDN 
> connection? A 30 channel ISDN certainly sounds like an E1 connection, 
> but I couldn?t get any clear answers from the operator if
> 
> it is.
> 
> Has anyone used the TE110P card in Sweden with telia?
> 
>  
> 
> Thanks
> 
> /sverrir
> 
>  
> 
>  
> 
>  
> 
> 
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On Fri, 11 Feb 2005, Alistair Cunningham wrote:
> 30 channel ISDN (generally known as primary rate ISDN, PRI) is a layer 
> that runs on top of E1, just as Internet Protocol can run over Ethernet.
IP is run over just about anything that passes data, serial lines, atm, 
ethernet, you name it, it has probably had ip run over it. 

Isdn on the other hand is very unusual over anything but the various BRI
configurations and E1 / T1 for PRI. Some may have multiple E1s over E3 or
some other aggregated connection, but nothing more exotic.

Peter