[hylafax-users] Confusion about ECM and Multitech

["A. Kalten" <akalten@xxxxxxxxxxx>]

With HylaFax 4.3.1 I am using a Multitech 5634ZPX, which, 
according to the technical manual, fully supports the Error
Correction Mode (ECM).

However, when HylaFax is started (class 2.1), I see this in
the log file:

FaxGetty[1318]: MODEM Supports no ECM
FaxGetty[1318]: MODEM Supports T.30 Annex A, 64-byte ECM
FaxGetty[1318]: MODEM Supports T.30 Annex A, 256-byte ECM

Also, when sending a fax (class 2.1), the log does not explicitly
state that ECM is being used:

Jan 02 08:42:55.13: [  971]: REMOTE best rate 31200 bit/s
Jan 02 08:42:55.13: [  971]: REMOTE max A4 page width (215 mm)
Jan 02 08:42:55.13: [  971]: REMOTE max unlimited page length
Jan 02 08:42:55.13: [  971]: REMOTE best vres 15.4 line/mm
Jan 02 08:42:55.13: [  971]: REMOTE format support: MH, MMR
Jan 02 08:42:55.13: [  971]: REMOTE supports T.30 Annex A, 256-byte ECM
Jan 02 08:42:55.13: [  971]: REMOTE best 10 ms/scanline
Jan 02 08:42:55.13: [  971]: USE 31200 bit/s
Jan 02 08:42:55.13: [  971]: SEND file "docq/doc1.tif;71"
Jan 02 08:42:55.13: [  971]: USE A4 page width (215 mm)
Jan 02 08:42:55.13: [  971]: USE unlimited page length
Jan 02 08:42:55.13: [  971]: USE 7.7 line/mm
Jan 02 08:42:55.13: [  971]: USE 1-D MH
Jan 02 08:42:55.13: [  971]: USE 10 ms/scanline

There is no problem, but just to satisfy my curiosity, why
does the log indicate "Supports no ECM" and are the faxes
being sent using ECM?

Andrew Kalten


____________________ HylaFAX(tm) Users Mailing List _______________________
  To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
 On UNIX: mail -s unsubscribe hylafax-users-request@xxxxxxxxxxx < /dev/null
  *To learn about commercial HylaFAX(tm) support, mail sales@xxxxxxxxx*