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Section 3
Specifications
OMEGA Operation, and Maintenance Manual 31
3
Specifications
This section describes the OMEGA specifications.
Operation
OMEGA is designed to connect a remote end point device
equipped with an internal modem to a head end computer when a
conventional land line is not available. The interface of the
modem within the endpoint device must meet PSTN and FCC-68
requirements and be compatible with all standard TELCO
handshake signaling.
Modem Interface
A standard RJ-11 modular jack connector provides the OMEGA’s
modem interface. The connection is a standard 2-wire dial line
interface that has the following specifications:
Output ring frequency: 18
±
2 Hz
Ring voltage: 70 volts peak to peak
Maximum ringer’s equivalent: 2.0 B
Dial tone frequency: 450 Hz +/- 50 Hz
Dial tone level: 1.0 Volts +/- 20%
ON/Off-hook current detection: >4 ma
DTMF detection: Yes
Pulse dialing support: Not supported