3Com MSR 50, MSR 30 manual Send-busytone, Been used to identify nonstandard T38 fax packets

	2607
Parameter	value: Value of the payload type field in RTP packets, in the range of 96 to 127.
Description	Use the rtp payload-type nte command to configure the payload type field in
	RTP packets in the case of DTMF relay using NTE.
	Use the undo rtp payload-type nte command to restore the default.
	By default, the payload type field in RTP packets is set to 101 in the case of DTMF
	relay using NTE.
n	■ It is forbidden to set the NTE payload type field to “98”, which has already
	been used to identify nonstandard T38 fax packets.
	■ When the device is connected with devices of other manufacturers for
	communication, you cannot set the payload type field to any forbidden by
	these routers. Otherwise, an NTE negotiation failure may occur.
Example	# Set the NTE payload type field to “102” for VoIP entity 10.
	<Sysname> system-view
	[Sysname] voice-setup
	[Sysname-voice] dial-program
	[Sysname-voice-dial] entity 10 voip
	[Sysname-voice-dial-entity10] rtp payload-type nte 102
send-busytone
Syntax	send-busytone { enable time seconds }
	undo send-busytone { enable time }
View	Analog FXO voice subscriber line view
Parameter	enable: Enables busy-tone sending on the FXO interface.
	time seconds: Duration of busy tone in seconds, in the range of 2 to 15. It
	defaults to 3 seconds. This parameter is not available without using the
	send-busytone enable command to enable busy-tone sending function.
Description	Use the send-busytonecommand to enable busy tone sending on the FXO
	interface. Use the undo send-busytonecommand to disable busy tone sending
	on the FXO interface.
	By default, busy tone sending is disabled.
Example	# Enable FXO interface 1/0 to send busy tone that lasts 5 seconds.
	<Sysname> system-view
	[Sysname] voice-setup
	[Sysname-voice] subscriber-line 1/0
	[Sysname-voice-line1/0] send-busytone enable
	[Sysname-voice-line1/0] send-busytone time 5