<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 24 Oct 2008, at 17:00, Phil Knighton wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Tahoma" vlink="#990000" alink="#00ff00" link="#0000ff" bgcolor="#ffffff" background=""><font face="Tahoma" color="#000000" size="2"> <div><span class="468255215-24102008">Hello all</span></div> <div><span class="468255215-24102008"></span> </div> <div><span class="468255215-24102008">What I'm looking for is some plain speaking advice on ISDN.</span></div> <div><span class="468255215-24102008"></span> </div> <div><span class="468255215-24102008">Currently using 4 analog lines connecting via a four port TDM400P FXO card. We need to physically move our installations, and on requesting the analog lines be moved - our telco (BT) is suggesting we replace our analog lines with ISDN2. We would have 3 x ISDN2 connections, giving us six voice channels. They've even offered us free installation of the lines (as opposed to a £560 charge for moving the analog lines!)</span></div> <div><span class="468255215-24102008"></span> </div> <div><span class="468255215-24102008">What hardware would you recommend in the Asterisk box? I don't mind admitting I'm a newb and a lot of the info I've found is over my head. I've been looking at a TE410P - would this achieve what I want which is to connect the 3 ISDN2 connections, giving me six voice channels?</span></div> <div><span class="468255215-24102008"></span> </div> <div><span class="468255215-24102008">Assuming the TE410P is what I'm looking for (or an equivalent - suggestions?) what are the basic points for what I would need to change in my current config?</span></div> <div><span class="468255215-24102008"></span> </div> <div><span class="468255215-24102008">Any help or suggestions would be gratefully appreciated :-)</span></div> <div><span class="468255215-24102008"></span> </div> <div><span class="468255215-24102008">Cheers</span></div> <div><span class="468255215-24102008"></span> </div> <div><span class="468255215-24102008">Phil</span></div></font></div></blockquote><br></div><div>Couple of things to look out for :</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>1) FAX! If you currently have a fax on any of the 4 analog lines, then moving to ISDN will<br></div><div>require you to do a major dance to get it working with any degree of reliability. (same goes for </div><div>dialup modems, creditcard processing machines, alarm systems, sky boxes etc)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>2) There really isn't any competition in the ISDN BRI market in the UK - once </div><div>down that road you are tied to BT.</div><div> If you do want to go to ISDN, think seriously of getting a PRI (30 channels) with only a few channels</div><div>'lit'. The normal minimum is 8 out of the 30, but I once persuaded NTL (as was) to put up a 6 line</div><div>PRI. All the telcos have PRI offerings, and the cards for asterisk are cheaper than the equivalent </div><div>BRI card.</div><div><br></div><div><br></div><div> In your situation I'd be taking 2 analog lines and an ADSL, use the ADSL to make voip</div><div>calls through a good VoIP provider and the 2 analog lines for emergencies, faxes and failover.</div><div><br></div><div><br></div><div>Tim.</div></body></html>