[asterisk-users] Very slow faxing with Fax For Asterisk

Bryant Zimmerman BryantZ at zktech.com
Mon Mar 12 14:49:12 CDT 2012


Switch to a Grandstream HT-701 or HT-502 and see if you get better results. 
The HT-286 has been discontinued for some time and the firmware has some 
major T.38 issues. 


Bryant Zimmerman (ZK Tech Inc.)
616-855-1030 Ext. 2003 

 From: "Chet W. Stevens" <cwstevens at interact.ccsd.net>
Sent: Monday, March 12, 2012 3:36 PM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Very slow faxing with Fax For Asterisk

  I have been testing Fax For Asterisk with an analog fax sitting behind a 
Grandstream Handytone 286. I have been sending a number of faxes but I find 
that they send extremely slow. In my most basic test of sending from the 
HT286 straight to a tiff image on Asterisk on the same subnet I am seeing 
as much as 200 seconds to send a single page. Debug in the CLI shows that 
we are negotiating down to T.38 4800. I have disabled echo cancellation and 
noise suppression on the HT286 but with no change. I have tested with 
different fax machines (HP 1040 Fax and Sharp UX-B800SE) but with the same 
results. My Asterisk and FFA module versions are: 
FAX For Asterisk Components:        Applications: 
SVN-branch-1.8-digiumphones-r357808-/branches/1.8        Digium FAX Driver: 
1.8.4_1.3.0 (optimized for generic_64) 
Your suggestions are appreciated. Thank you. 
Chet Stevens cwstevens at interact.ccsd.net 

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