<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML dir=ltr><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2800.1400" name=GENERATOR></HEAD>
<BODY>
<DIV dir=ltr align=left><SPAN class=415095000-01052004><FONT face=Arial
color=#0000ff size=2>The channel bank and the Asterisk server talk T1 to each
other. You supply a T1 connection between the channel bank and the Asterisk
server. That is, you put a T1 card in the Asterisk box and then connect it
to the channel bank, usually with a T1 crossover cable. The channel bank can
then "break out" the individual channels from the T1 card into separate
ports. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=415095000-01052004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=415095000-01052004><FONT face=Arial
color=#0000ff size=2>For example, I have one installation with two T1 lines
coming in from the phone company and an Adit channel bank. I have a single
Digium quad span T1 card. Two cables connect spans two and three of the Digium
card to the T1 lines from the telephone company. Two other cables connect
spans one and two on the Digium T1 card to the Adit. The Adit ports are set
up for 48 FXS lines in my case, buy you can set them up for fxs or fxo.
</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=415095000-01052004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=415095000-01052004><FONT face=Arial
color=#0000ff size=2>The channel bank expects T1 signalling. For example, the
Adit I am using is set up for B8ZS/ESF wink start. </FONT></SPAN></DIV>
<DIV> </DIV>
<STYLE>A.psl {
COLOR: #400080; TEXT-DECORATION: none
}
A:hover {
TEXT-DECORATION: underline
}
A.psl:hover {
COLOR: #999999
}
.noro {
FONT-SIZE: 8pt; COLOR: #400080; FONT-FAMILY: Verdana,Arial,fixed
}
.tiny {
FONT-SIZE: 1pt
}
.logotext {
FONT-SIZE: 10pt; COLOR: #ffffff; FONT-FAMILY: Verdana,Arial,fixed; TEXT-DECORATION: none
}
A.brand {
FONT-SIZE: 7pt; COLOR: #777777; FONT-FAMILY: Verdana,Arial,fixed; TEXT-DECORATION: none
}
</STYLE>
<DIV align=left>
<DIV align=left>
<TABLE id=AutoNumber1 style="BORDER-COLLAPSE: collapse" borderColor=#c0c0c0
height=107 cellSpacing=1 cellPadding=2 width=456 align=left border=2>
<TBODY>
<TR>
<TD vAlign=top width=180 height=102><B><FONT face=Verdana size=1><BR>Paul
Mahler</FONT></B><FONT face=Verdana size=1> <BR><A
href="mailto:pmahler@signate.com"><FONT
color=#c0c0c0>pmahler@signate.com</FONT></A><FONT color=#c0c0c0>
</FONT></FONT></TD>
<TD vAlign=top width=260 height=102>
<P align=right><A class=logotext href="http://www.signate.com/"
target=_blank><IMG height=55 src="cid:415095000@01052004-1F1B" width=113
align=left border=0></A><FONT face=Verdana size=1><B><BR><FONT
color=#c0c0c0>Signate, LLC</FONT></B><FONT color=#c0c0c0><BR>PO Box
60430<BR>Palo Alto, CA<BR> 94306</FONT><BR><BR> <FONT
color=#c0c0c0>VoIP Systems, Training &
Consulting</FONT></FONT></P></TD></TR></TBODY></TABLE></DIV>
<P> </P>
<P> </P>
<P> </P></DIV>
<DIV> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] <B>On Behalf Of </B>Keith
D'Atrio<BR><B>Sent:</B> Friday, April 30, 2004 4:35 PM<BR><B>To:</B>
asterisk-users@lists.digium.com<BR><B>Subject:</B> [Asterisk-Users] Channel
Banks<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial color=#000000 size=2>Hello all;</FONT></DIV>
<DIV><FONT face=Arial size=2> My buddy and I have been working on this
asterisk server for a little while now and we both have one running at our
houses. We are looking into ways to expand out to bigger servers and have hit a
point of contention between us. We are looking for a way to put 12 FXO and 24
FXS onto an asterisk server. I feel we need to use PCI cards in the box and my
friend says a channel bank will do the trick. I see how the pci cards talk to
asterisk obviously but how does the signaling work on a channel bank is it
Ethernet or do you still bring it into an fxo or T1 card on the server? Feel
free to laugh but I can not get my head around how the channel bank works in
this picture.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith</FONT></DIV>
<DIV> </DIV></BODY></HTML>