<div dir="ltr">Thanks a lot all, <br>Now my view is clear ...<br><br><div class="gmail_quote">On Sun, May 29, 2011 at 3:15 PM, Gordon Henderson <span dir="ltr"><<a href="mailto:gordon%2Basterisk@drogon.net">gordon+asterisk@drogon.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">On Sun, 29 May 2011, virendra bhati wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi List,<br>
<br>
I have stupid question but I want to know it. Why we use the PRI insted of<br>
BRI ? Just for the sake of number of lines or any thing else ?<br>
</blockquote>
<br></div>
It probably depends on your country.<br>
<br>
In mainland europe (or maybe just Germany), ISDN2e (BRI) is very popular - not uncommon in home installations too.<br>
<br>
In the UK, it's almost the standard in small businesses - the migration path seems to be from a single line to 3 lines sharing the same number to ISDN2e...<br>
<br>
There was a push in the UK to support BRI in the home (~10 years back, under the name Home Highway), but it came at a time when ADSL was almost upon us, and BT in their infinite wisdom removed a lot of the ISDN features that make it actually useful...<br>
<br>
I don't think BRI ever caught on in the US - It was analogue or PRI (or channelised/fractional T1 or whatever it's called) Probably made it much easier for the telcos to support (and afford)<div class="im"><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
And why SIP is used for making calls rather then IAX? Even we know IAX takes<br>
1 channel for making calls?<br>
</blockquote>
<br></div>
SIP is an open standard that's been around since the late 90's. IAX, which is also open and free was only just accepted as a standard last year, but even so, there's inertia. Very few phone manufacturers are using it - why should they, when they've been using SIP for years, and the same PBX that works with IAX also works with SIP... (And does any other PBX support IAX yet?)<br>
<font color="#888888">
<br>
Gordon</font><div><div></div><div class="h5"><br>
<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><div dir="ltr"><br><br><br>-----<br>Thanks and regards<br><br> Virendra Bhati<br>+91-9172341457<br>Asterisk Engineer<br></div><br>
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