Patton electronic MODEL 2707/I user manual Switch S1 settings, Switch Description Setting

Switch S1 settings

Table 1 shows the settings for DIP switch S1-1 thru S1-8.

Table 1: Switch S1 settings

Switch	Description		Setting
S1-1	Line Coding	Off = HDB3
		On = AMI
S1-2	Line Loopback (toward	Off = LLB disabled
	E1 line)	On = LLB enabled
	Note The Model 2707/I, when
	in line loopback mode,
	will loop the network line
	and return any trafic
	received on the E1 line
	to the sending device at
	the remote end.
S1-3	Reserved	Off = Default
S1-4	Reserved	Off = Default
S1-5	Reserved	Off = Default
S1-6/S1-7	Clocking	Switch	Switch
		1-6	1-7
		On	On	Network
		On	Off	Internal (default)
		Off	On	Reserved
		Off	Off	Network
S1-8	Reserved	Off = Default

SW1-1 Line Coding: HDB3 (default)

Use Switch SW1-1 to control the Network Line Coding options. Set these options to be the same as the Line Coding given to you by your Service Provider. If you are using two Model 2707/Is together as short range modems, set both units to HDB3.

SW1-1	Line Encoding
Off	HDB3
On	AMI

Options: HDB3, AMI

•HDB3. In this line coding, the transmitter substitutes a deliberate bipo- lar violation when excessive zeros in the data stream are detected.

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