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<DIV dir=ltr align=left><SPAN class=269153513-03062005><FONT face=Arial
color=#0000ff size=2>Thanks Nick, </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=269153513-03062005><FONT face=Arial
color=#0000ff size=2>This seems to be related however to h.323. I know that with
h.323 I can set the rate and I assumed that this was the case for SIP, but now I
'm not so sure . In the "configuring fax" guide (firt url) it talks about
setting the fax rate, but then says 64k I've tried asking my local cisco rep and
I'll let you know if I get a </FONT></SPAN><SPAN class=269153513-03062005><FONT
face=Arial color=#0000ff size=2>answer. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=269153513-03062005><FONT face=Arial
color=#0000ff size=2>Brian</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=269153513-03062005><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Nick Marus [mailto:nmarus@gmail.com]
<BR><B>Sent:</B> venerd́ 3 giugno 2005 15.33<BR><B>To:</B> Brian
Turnbow<BR><B>Cc:</B> cisco-voip@puck.nether.net<BR><B>Subject:</B> Re:
[cisco-voip] SIP t.38 fax<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>Interseting you mentioned this for I was having to look this info up this
week as well and found this article:</DIV>
<DIV> </DIV>
<DIV><A
href="http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t3/dt_t38fx.htm">http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t3/dt_t38fx.htm</A></DIV>
<DIV> </DIV>
<DIV>What I understood is that it varies depending on the fax rate command. If
you use fax rate voice it will take 64k, but if you use faxrate 9600 it only
uses 24k.</DIV>
<DIV> </DIV>
<DIV><STRONG>Excerp:</STRONG></DIV>
<DIV><STRONG>Note</STRONG> The fax call will not get compressed
using the ip rtp header-compression command, because User Datagram Protocol
(UDP) is being used and not Real-time Transport Protocol (RTP). For example,
9600 fax call will take about 24 kbps. </DIV>
<DIV><BR><BR> </DIV>
<DIV><SPAN class=gmail_quote>On 6/3/05, <B class=gmail_sendername>Brian
Turnbow</B> <<A href="mailto:b.turnbow@twt.it">b.turnbow@twt.it</A>>
wrote:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><BR>
<P><FONT face=Arial size=2>Hello All, </FONT><BR><FONT face=Arial
size=2>I am look ing to deploy a SIP network that needs to support fax
and looking into t.38 I found </FONT></P>
<P><FONT face=Arial size=2>SIP T.38 Fax Relay </FONT></P>
<P><FONT face=Tahoma size=2>•</FONT><FONT face=Arial size=2>T.38 fax relay
requires a 64-kbps transmission rate, the same amount of bandwidth as a voice
call with the G.711 codec. </FONT></P>
<P><A onclick="return top.js.OpenExtLink(window,event,this)"
href="http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide_chapter09186a00800b5dce.html"
target=_blank><U><FONT face=Arial color=#0000ff
size=2>http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide_chapter09186a00800b5dce.html</FONT></U></A>
</P><BR>
<P><FONT face=Arial size=2>Do you need 64k for a fax transmission with via sip
using a cisco gateway ? </FONT></P>
<P><FONT face=Arial size=2>Thanks</FONT> <BR><FONT face=Arial
size=2>Brian</FONT>
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<BR><BR><BR></BLOCKQUOTE></DIV><BR><BR><BR>-- <BR><BR>Nick Marus<BR><A
href="mailto:nmarus@gmail.com">nmarus@gmail.com</A><BR>homepage: <A
href="http://www.nicholasmarus.com">http://www.nicholasmarus.com</A><BR></BODY></HTML>