Canon MF419x User Manual page 665

Communication Management Settings
Configure the settings for the transmission start speed when faxes are sent and received, and for archiving
documents that have been sent.
TX Start Speed
Adjust the communication start speed in descending order from <33600 bps>. This adjustment should be
made when it takes a long time to start sending a fax due to a poor telephone line connection.
33600 bps
14400 bps
9600 bps
7200 bps
4800 bps
2400 bps
<Menu> <Fax Settings>
Start Speed>
RX Start Speed
Adjust the communication start speed in descending order from <33600 bps>. This adjustment should be
made when it takes a long time to start receiving a fax due to a poor telephone line connection.
33600 bps
14400 bps
9600 bps
7200 bps
4800 bps
2400 bps
<Menu> <Fax Settings>
Start Speed>
R-Key Setting
If your machine is connected through a PBX (Private Branch Exchange), it is necessary to set the access
method. You can set the PBX type to <Prefix> or <Hooking>. If you register the outside line access number to
the R-key, you can easily access the outside line.
PSTN
PBX*1
Prefix
Hooking
Setting Menu List
<Basic Settings>
Select a communication start speed
<Basic Settings>
Select a communication start speed
656
<Communication Management Settings>
<Communication Management Settings>
<TX
<RX