R2511-HP MSR Router Series Voice Configuration Guide(V5)

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Configuration prerequisites
VoIP configuration is completed, IP calls can be made successfully, and fax machines are connected
correctly.
Configuration procedure
To configure ECM for fax:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Enter voice dial program
view.
dial-program
N/A
4. Enter voice entity view.
entity entity-number { pots | vofr |
voip }
N/A
5. Enable ECM for fax.
fax ecm
By default, ECM is disabled on the
gateway.
The configuration of this command in
voice entity view is invalid for the
FRF.11 trunk mode.
Configuring fax faculty transmission mode
In common fax applications, the participating fax terminals negotiate with the standard faculty (such as
V.17 and V.29 rate) by default. It means that they do not send each other non-standard facilities (NSF)
message frames. In some cases such as encrypted fax, both fax terminals adopt a (NSF to negotiate. At
the start of negotiation, both terminals first exchange NSF message frames, and then negotiate the
subsequent fax faculty for communication. NSF messages are standard T.30 messages and carry private
information.
In order to use a nonstandard faculty for negotiation, the following conditions must be met:
• Fax terminals must support nonstandard transmission mode.
• The transmission mode must be set to a nonstandard mode in the POTS and VoIP entities for both
fax terminals.
Configuration prerequisites
VoIP configuration is completed, IP calls can be made successfully, and fax machines are connected
correctly.
Configuration procedure
To configure fax faculty transmission mode:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Enter voice dial program view.
dial-program
N/A
4. Enter voice entity view.
entity entity-number { pots |
voip }
N/A