Ricoh Aficio MP C3001 Service Manual page 1891

A mail requesting a Return Receipt sent from an IFAX with this switch set to "00"
(for "dispatched") received by Microsoft Outlook 2000 may cause an error. If any
setting other than "displayed" (01) causes a problem, change the setting to "01" to
enable normal sending of the Return Receipt.
Media accept feature
This setting adds or does not add the media accept feature to the answer mail to
confirm a reception.
4
0: Does not add the media accept feature to the answer mail
1: Adds the media accept feature to the answer mail.
Use this bit switch if a problem occurs when the machine receives an answer
mail, which contains the media accept feature field.
5-6 Not Used
Image Resolution of RX Text Mail
This setting determines the image resolution of the received mail.
0: 200 x 200
7
1: 400 x 400
The "1" setting requires installation of the Function Upgrade Card in order to have
enough SAF (Store and Forward) memory to receive images at 400 x 400
resolution.
SM 87
Bit Switches
D545