<br><br><div class="gmail_quote">2010/7/3 Paul Timmins <span dir="ltr"><<a href="mailto:paul@timmins.net">paul@timmins.net</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
There's a reason that it hasn't taken the world by storm. Let's make our<br>
voice network needlessly dependent on our data network so we can save<br>
ourselves a few 56k links to the telco in exchange for IP links to the<br>
telco, right?<br><br></blockquote></div><br>Yeap. But still you could use a 56k ( U r from USA?) or 64k for PPP connection and have a IP over a 56k/64k channel :)<br>So you could have some more things on this PPP connection than just a ss7 signaling (like critical DNS traffic or accouting over a network of PBXes, or sms exchange or VM connectivity like the IIRC 'VPIM' protocol to send some VM messages by IP very old but could still be in use). <br>
<br>To be not off-topic: asterisk has great ZAPRAS capability: to have dynamic PPP on T1/ E1 link ! you use as many B channels as you have free. For example if you got 5 channels with voice, 30 channels in total, you could say '2 is minimum reserver for extra voice' so 30 - 5 - 2 = 23 B channels for IP traffic, if you do math it gives a 1472 bps, for small company it's (it was...) enough ! and it's on one T1 / E1 link.<br>
<br>If you see voice network as a whole: there is a SMS service. How should SMS go from one smscenter to another? on some SS7 signaling (so license for your SS7 exchange should be bought in 99% vendors cases) or just put it on extra IP that is avalible on this 56/64 kbps ? <br>
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