3300 ICP Hardware User Guide
76 Release 3.3
• ONS line card and ONS CLASS/CLIP line card The On-Premises (ONS) line card and the
ONS Custom Local Area Signaling Service (CLASS)/Caller Line Identification Presentation
(CLIP) line card provides 16 circuits for industry-standard rotary dial and DTMF telephones.
• OPS line card The Off-Premises (OPS) line card provides eight circuits for industry-stan-
dard telephones where the external loop resistance exceeds 600 ohms or where lightning
surge protection is required.
LS/GS Trunk Card
The LS/GS trunk card is used to terminate eight central office (CO) trunks. The LS/GS trunk
card connects to any Peripheral Interface card slot on the peripheral shelf via connectors J1
and J2.
The alternate LS/GS trunk card Layout is currently only available in Germany.
LS/GS Trunk Card Specifications
Operation
The LS/GS trunk card interfaces with analog central office (CO) trunks on either a -48 Vdc loop
start (LS) or -48 Vdc ground start (GS). The preferred interface is GS.
The German variant has LS function only.
Note: AC15 Trunk Cards and COV Line Cards are not supported.
Variants Available: µ-law (NA), A-law (UK), N.Z./UK, Italy, Germany)
Number of Circuits per Card: 8 LS/GS trunk circuits
Power Consumption: NA, UK, NZ, Italy: 4.20 watts
Germany: 3.36 watts
External Loop Resistance: 2367 ohms (includes CO feed resistance and is measured based on
-48 V @ 18mA)
Features Provided: 2-wire/4-wire conversion
A-D/D-A conversion
address Signaling: MF-R1, DTMF or dial pulse
programmable loop start or ground start mode
balanced network selection
gain control/circuit descriptor
tip ground and ring ground detection
metering: 12 kHz (Italy), 16 kHz (Germany), 50 kHz (UK) or dc
message registration (NA)
self test capability
automatic card identification
Compliance: Complies with all pertinent sections of EIA Standard
RS-464 (NA), BTR Spec 1050 (UK and NZ), and FTZ 123 R-1
standards for Germany.
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