<html><head><style type='text/css'>body { font-family: 'Times New Roman'; font-size: 12pt; color: #000000}</style></head><body>Even if * is shutdown, zaptel is still running and your ISDN channels are still technically up. Shutting down zaptel should close the channels and put those circuits into alarm mode.<br><br>Tim Nelson<br>Systems/Network Support<br>Rockbochs Inc.<br>(218)727-4332<br><br>----- Original Message -----<br>From: "Andrew Smith" <andrews@meadeplc.com><br>To: asterisk-users@lists.digium.com<br>Sent: Wednesday, February 13, 2008 12:03:51 PM (GMT-0600) America/Chicago<br>Subject: [asterisk-users] ISDN PRIs and taking a server down for maintenance - blocking issue<br><br>
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<div><span class="583264717-13022008"><font face="Arial" size="2">Hi
there,</font></span></div>
<div><span class="583264717-13022008"><font face="Arial" size="2"></font></span> </div>
<div><span class="583264717-13022008"><font face="Arial" size="2">I currently have
multiple Asterisk servers using Sangoma A104d Quad ISDN
E1s.</font></span></div><span class="583264717-13022008">
<div><br><font face="Arial" size="2">Basically our telco is presenting calls in
order of the ISDNs on our servers.</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><span class="583264717-13022008"><font face="Arial" size="2">SERVER1=1,2,3,4<br>SERVER2=5,6,7,8</font></span></div>
<div><span class="583264717-13022008"><font face="Arial" size="2"></font></span> </div>
<div><span class="583264717-13022008"><font face="Arial" size="2">We have redundancy
in that if SERVER1 is shutdown then each ISDN PRI is in alarm and the calls will
then presented to PRIs 5,6,7,8 on SERVER2.<br><br>If I have to take SERVER1
offline for maintenance (asterisk -rx shutdown gracefully) any incoming
calls receive a BUSY tone.<br><br>What I would like to know is if there is
anyway to get around this and not send a BUSY back to our callers and somehow
allow our telco to present calls immediately to SERVER2.<br><br>Anyone have any
ideas or are we stuck with this behaviour until the calls drop to 0
and Asterisk shuts
down ?<br><br>Thanks,<br>Andrew</font></span></div>
<div><span class="583264717-13022008"><font face="Arial" size="2"></font></span> </div>
<div><span class="583264717-13022008"><font face="Arial" size="2"></font></span> </div></span></div></body></html>