Ricoh M281 Series - Cannot receive by VoIP Gateway; Cannot receive by Alias Fax number

IP-Fax Troubleshooting
SM 55 D255/D256 FAX OPTION
D255/D256
FAX OPTION
8 Remote fax cancelled transmission? Check whether the remote fax cancelled
the transmission.
Cannot receive by VoIP Gateway
Check Point Troubleshooting Procedures
1 LAN cable connected? Check the LAN cable connection.
2 Firewall/NAT installed? The firewall cannot be breached. Send by
another method (Fax, Internet Fax)
3 VoIP Gateway installed correctly? Contact the network administrator.
4 VoIP Gateway power turned ON? Contact the network administrator.
5 IP address/host name of specified VoIP
Gateway correct on sender's side?
Request the remote fax to check the IP
address/host name.
6 DNS server registered when host name
specified on sender side?
Contact the network administrator.
7 Network bandwidth too narrow? Request the network administrator to
increase the bandwidth.
8 G3 fax connected? Check that G3 fax is connected.
9 G3 fax power turned ON? Check that G3 fax is ON.
Cannot receive by Alias Fax number
Check Point Troubleshooting Procedures
1 LAN cable connected? Check the LAN cable connection.
2 Firewall/NAT installed? The firewall cannot be breached. Send by
another method (Fax, Internet Fax)