Technical data

45
Global fax configuration options allow for overwriting parameters passed by the fax application to the Dialogic
®
Diva
®
Media Board and to control parameters running on the Diva Media Board's T.30 protocols. This provides a
high level of flexibility, especially if the fax application does not provide the required parameters.
Fax configuration options
Option Description
Fax speed limit Allows to limit the transmission speed. Normally, you do not need to limit the
fax speed because the Diva Media Board automatically negotiates the
appropriate speed.
Disable fine resolution Disables the transmission of fax messages with high resolution.
Disable Error
Correction Mode (ECM)
Disables the transmission of fax messages using ECM (Error Correction Mode).
Use ECM frame length
of 64 bytes
Forces usage of HDLC frames with a maximum length of 64 bytes if
transmitting fax messages using ECM (Error Correction Mode).
Disable 2D fax
document compression
Disables usage of 2D fax document compression. This option also disables the
automatic (transparent to application) fax document compression provided by
the Diva Media Board in order to increase the effective transfer speed of fax
messages.
Disable T.6 fax
document compression
Disables usage of T.6 fax document compression. This option also disables the
automatic (transparent to application) fax document compression provided by
the Diva Media Board in order to increase the effective transfer speed of fax
messages.
Disable uncompressed
T.6 fax document lines
In some cases, compression of a fax document line results in a line that is
longer than the uncompressed original. The T.6 protocol allows you to reduce
the fax transmission time by transmitting such lines without compression. This
option disables the line compression optimization.
Refuse incoming
polling requests
Disables incoming polling requests.
Hide "total pages"
information in fax
message
Hides the "total pages" information field in the fax message.
Hide "head line"
information in fax
message
Hides the "headline" information field in the fax messages.
Hide "page info"
information in fax
message
Hides the "page info" (i.e. message head) field in the fax messages.
Disable fallback to
lower speed on failure
"Feature fallback" is used to prevent excessive resending of fax documents if
working over poor quality lines. The Diva Media Board internally saves the fax
ID of the last peer and the results of the fax transmission from this peer. If the
results of the last fax transmission were negative and the application starts
message re-transmission, the Diva Media Board will detect this and fallback to