Multi-Tech Systems 410 Out of Band, or Inband, In/Out, Fax Enable, Max Baud, Rate, Fax Volume

		Chapter 3 – Related MultiVOIP Setup Parameters
	Voice/Fax Parameter Definitions Continued
Field Name	Values	Description
DTMF Parameters
DTMF Gain	--	The DTMF Gain (Dual Tone Multi-Frequency) controls
		the volume level of the DTMF tones sent out for Touch-
		Tone dialing.
DTMF Gain,	+3dB to -31dB &	Default value: -4 dB. Not to be changed except under
High Tones	“mute”	supervision of MultiTech’s Technical Support.
DTMF Gain,	+3dB to -31dB &	Default value: -7 dB. Not to be changed except under
Low Tones	“mute”	supervision of MultiTech’s Technical Support.
Duration	60 – 3000 ms	When DTMF: Out of Band is selected, this setting determines
(DTMF)		how long each DTMF digit ‘sounds’ or is held. Default = 100
		ms.
DTMF	Out of Band, or Inband	When DTMF Out of Band is selected, the MultiVOIP detects
In/Out of		DTMF tones at its input and regenerates them at its output.
Band		When DTMF Inband is selected, the DTMF digits are passed
		through the MultiVOIP unit as they are received.
FAX Parameters
Fax Enable	Y/N	Enables or disables fax capability for a particular channel.
Max Baud	2400, 4800, 7200, 9600,	Set to match baud rate of fax machine connected to channel
Rate	12000, 14400 bps	(see Fax machine’s user manual). For CM managed fax calls it
(Fax)		is recommended to use 9600.
		Default = 14400 bps.
Fax Volume	-18.5 dB	Controls output level of fax tones. To be changed only under
(Default =	to –3.5 dB	the direction of Multi-Tech’s Technical Support.
-9.5 dB )
Jitter Value	Default =	Defines the inter-arrival packet deviation (in milliseconds) for
(Fax)	400 ms	the fax transmission. A higher value will increase the delay,
		allowing a higher percentage of packets to be reassembled. A
		lower value will decrease the delay allowing fewer packets to
		be reassembled.
Mode (Fax)	FRF 11; T.38	FRF11 is frame-relay FAX standard using these coders: G.711, G.728,
		G.729, G.723.1.
		T.38 is an ITU-T standard for storing and forwarding FAXes
		via email using X.25 packets. It uses T.30 fax standards and
		includes special provisions to preclude FAX timeouts during
		IP transmissions. Must use T.38 when faxing to/from CM.
		Note: When the MultiVOIP stops receiving T.38 packets, it will
		wait ten seconds before switching to voice mode.
Coder Parameters
Coder	Manual or	Determines whether selection of coder is manual or
	Auto-matic	automatic. Must be set to manual for CM managed calls.
		When Automatic is selected, the local and remote voice
		channels will negotiate the voice coder to be used by
		selecting the highest bandwidth coder supported by
		both sides without exceeding the Max Bandwidth
		setting. G.723, G.729, or G.711 are negotiated.

38 Multi-Tech Systems, Inc. Avaya Communication Manager Guide