Multi-Tech Systems MVP-410ST/810ST, MVP-130/130FXS, MVP-2410/3010 Common will be 0 to 40m, 159

MultiVOIP User Guide Technical Configuration (T1/E1)

T1 Parameter Definitions (cont’d)

Field Name	Values	Description
Line Build Out	0 dB, -7.5 dB,	To reduce the crosstalk on
	-15 dB, -22.5 dB	received signals, a transmit
		attenuator can be placed in the
		data path. Transmit attenuation
		is selectable. Default: O dB
Pulse Shape	0 to 40 Meters	Refers to length of cable
Level	40 to 81 m	between MultiVOIP and
	81 to 122 m	PBX/telco in meters. Most
	122 to 162 m	common will be 0 to 40m.
	162 to 200 m
Clocking	External/Internal	Set opposite to telco/PBX
		setting. Example: if telco
		clocking internal, set VOIP
		clocking as external.
Line Coding	AMI / B8ZS	Match to PBX or telco.
PCM Law	A-Law/Mu-Law	Match to PBX or telco. “
		Mu-law” is analog-to-digital
		compression/expansion
		standard used in North
		America. “A-law” is European
		standard.
Yellow Alarm	Bit 2 / 1111…	Depending on the Frame
Format		Format used, there are choices
		of Yellow Alarm format, as
		follows:
		D4: -Bit2= 0 in every speech
		channel
		-FSbit of frame 12 is forced
		to one.
		ESF: -Bit2= 0 in every speech
		channel
		–1111111100000000 pattern
		in data link channel.
		Check with your PBX/telco
		administrator for the correct
		setting or use the default value
		(1111 … ).

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