61180403L1-5B Issue 2, December 2004 5
Table 4. DIP Switches
Sw.-Segment Label Function/Description
1-1 D3/D4 D3 or D4 Signaling (PLAR only)
1-2
1-3
MODE 1/OFF
MODE 2/OFF
SW1-2 SW1-3 Mode Selected
OFF OFF FXS
OFF MODE 2 DPO
MODE 1 OFF Tandem
MODE 1 MODE 2 PLAR
1-4 GS/LS Ground Start or Loop Start
1-5 AUTO_TERM/OFF Reserved for future use
1-6 900/600 Selects the Impedance of the 2-wire interface:
900 + 2.16 µF or 600 + 2.16 µF
1-7 RTG/OFF Ringback Tone Generation (tandem and PLAR modes only)
1-8 DTG/OFF Dialtone Generation (tandem and PLAR modes only)
2-1 DPC/OFF Reserved for future use
2-2
2-3
2-4
2-5
2-6
2-7
2-8
RX64/OFF
RX32/OFF
RX16/OFF
RX08/OFF
RX04/OFF
RX02/OFF
RX01/OFF
Receive attenuation in 0.1 dB increments (values are additive up to a total
of 9.0 dB)
Example:
RX32 = 3.2 dB
RX01 = 0.1 dB
3.3 dB Total receive attenuation
3-1 SD/OFF Selects signaling on the loop during a Carrier Fail Alarm (CFA)
SD = Busy during CFA
OFF = Idle during CFA
3-2
3-3
3-4
3-5
3-6
3-7
3-8
TX64/OFF
TX32/OFF
TX16/OFF
TX08/OFF
TX04/OFF
TX02/OFF
TX01/OFF
Transmit attenuation in 0.1 dB increments (values are additive up to a
total of 7.0 dB)
Example:
TX32 = 3.2 dB
TX01 = 0.1 dB
3.3 dB Total transmit attenuation
4-1 IMM/WINK Tandem start mode: Immediate or Wink Start
4-2 REV/NORM Tandem battery mode: Reverse or Normal battery
4-3
4-4
4-5
4-6
4-7
4-8
NB64/OFF
NB32/OFF
NB16/OFF
NB08/OFF
NB04/OFF
NB02/OFF
Network Build Out Capacitance (NBOC) in 2 µF increments (values are
additive)