Command Reference Guide

3Com Router 5000 Family and Router 6000 Family default entity fax ● 69
Command Reference
Sets the fax speed to the allowed maximum voice
speed.
ecm
Enables fax error correction mode. It is disabled by
default.
level level
The level of the fax transmission signal. It defaults to
15.
local-train
Specifies the threshold of fax local training.
■ threshold value
Specifies the threshold of fax local training. It defaults
to 10.
nsf-on
Enables NSF message transmission. It is disabled by
default.
protocol
Specifies the transport protocol of the fax. By default,
the T.38 fax protocol applies. Both hb-redundancy
number and lb-redundancy number default to 0.
■ standard-t38
Adopts the standard T38 (UDP) fax protocol, which
supports H.323-T38 and SIP-T38 protocols.
■ nonstandard
Adopts the nonstandard protocol compatible with
private fax protocols.
■ pcm
Enables PCM mode.
■ g711alaw
Adopts G.711 a-law.
■ g711ulaw
Adopts G.711 ì-law.
■ t38
Adopts the T.38 fax protocol.
■ hb-redundancy number
Number of redundant high-speed T.38 packets.
■ lb-redundancy number
Number of redundant low-speed T.38 packets.
support-mode
Fax transport format. It defaults to real time protocol
(RTP).
■ rtp
Adopts RTP fax mode.
■ sip-udp
Uses the fax packets without RTP header.
■ vt