Ricoh mp 161 faxing

[callmefirst]

Ricoh MP 161 receives faxes but does not send to all numbers

[ucinn]

Ricoh MP 161 receives faxes but does not send to all numbers

error report codes? Good numbers that are actually fax lines? Not much to go on here.

[Jomama46]

Are you plugged into "line" not "tel".
On failed numbers, fax manually and listen before you start the xmission, this will generally tell you why the failure happened.

[rthonpm]

Try turning off ECM: Fax SP 1-104-002, change bit 0 to 0.

[Eric1968]

Did the customer pay his telephone bill?