Does it make any difference if you turn off the 'Phone Avail' Detection in Phone Dialing Options?
No need to call TiVo Support and wait on hold. There's a TiVo Dial-In Numbers tool on their website.RoyK said:May or may not be your problem but others have reported that many TiVo dial-up phone numbers have been discontinued. Worth checking out (call TiVo?).