ADTRAN SLC-5 U-BR1TE III Internal Switch Option Settings, Switch Label Function Description

Table 2. Internal Switch Option Settings

Switch	Label	Function		Description
SW1-1	B1	Service Level Selection	Selects the service level. The U-BR1TE III may be
SW1-2	B2		optioned to deliver full ISDN (2B+D) or any of the
SW1-3	D		following levels of service.
			Service Type	Service	SW1-1	SW1-2	SW1-3
				Option	(B1)	(B2)	(D)
			ISDN	*2B+D	On	On	On
			Leased (128 kbps)	2B	On	On	Off
			ISDN/ DDS	B1+D	On	Off	On
			ISDN	B2+D	Off	On	On
			DDS/Leased	B1	On	Off	Off
			Leased	B2	Off	On	Off
			ISDN	D	Off	Off	On
SW1-4			In 2B+D, B1+D, or B2+D the ZBS option must be set the same
On	ZBS EN	Enables ZBS	for the COT and RT. SW1-4 should be set toward "ZBS ENA"
			for AMI-provisioned carriers. The switch setting is optional for
Off	ZBS DIS*	Disables ZBS	B8ZS-provisioned carriers. In non-D channel modes ZBS must
			be disabled when DDS service rate is 64 kbps, or 56 kbps with
			secondary channel. Consult local provisioning guidelines.
SW1-5
Off	NORM*	Normal	No powering provided toward the customer U-interface
On	POWER	Powering provided toward	Automatically determines which of the following modes of
		the customer U-interface.	operation is appropriate;
			• Supply a constant 43 mA to power an ADTRAN ISDN
			U-Repeater II, U-Repeater III, or IDSL DDS-R.
			• Supply a constant -120 Vdc to power an ADTRAN
			IDSL OCU-R.
SW2-1		Termination Mode	This switch should be set toward "LULT"			when the unit is
On	LULT (RT)*	LULT Mode (RT typical)	installed as Adjacent-to U-Repeater, Adjacent-to-Customer,
			or Tandem Office Source configuration. This switch
Off	LUNT (COT)	LUNT Mode (COT)	should be set toward "LUNT"		for Adjacent-to-Switch and
			Tandem Office Sink configurations (See Figure 5).
SW2-2		LULT Mode (SW2-1 On)	In the LULT(RT) mode, SW2-2 controls sealing current.
On	ADJ*	DC sealing current provided	When used in an Adjacent-to-Customer configuration,
			sealing current should be provided (SW2-2 On). In a
Off	TANDEM	DC sealing current not	Tandem Office Source, sealing current is not required, and
		provided	should be disabled (SW2-2 Off) (See Figure 5).
On	ADJ	LUNT Mode (SW2-1 Off)	In the LUNT(COT) mode, SW2-2 controls periodic wake-
		Periodic wake-up tone not	up tone. Periodic wake-up tones should be disabled when
		provided	located in an Adjacent-to-Switch location (SW2-2 On).
Off	TANDEM		Periodic wake-up tones are required (SW2-2 Off) when
		Periodic wake-up tone	located in a Tandem Office Sink configuration, or when
		provided	adjacent to a device requiring wake-up tones, such as a
			Newbridge switch (See Figure 5).

Note: Power option should only be used in the LULT (RT) configuration.

*Factory Setting

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