General Description; Voice; Data - Nortel Meridian SL-100 Reference Manual

General description

The Meridian modular telephones are designed to provide cost-effective
integrated voice and data communications capability. These telephone sets
communicate with the MSL-100 Integrated Services Network, using digital
transmission over standard twisted-pair wiring. The telephones interface
with the MSL-100 system using the enhanced digital port card (EDPC),
which has 16 ports that support 16 digital telephones and data units. No
additional hardware is required in the loop circuit to provide data
communications. Analog-to-digital and digital-to-analog conversion of
voice signals are accomplished at the telephone set by a codec.
Meridian modular telephones are connected to the system through a
two-wire loop carrying two independent 64-Kbyte/s pulse code modulation
(PCM) channels with two associated 8-Kbyte/s signaling channels. One of
the two PCM channels is dedicated to voice, and the other channel is
dedicated to data traffic. Line cords and handset cords on all Meridian
modular telephones are equipped with snap-in TELADAPT connectors for
easy and quick connection.

Voice

Older model M2006 and M2008 sets are equipped with a piezo-disc
transducer for alerting tones and on-hook dialing. Newer sets are equipped
with a loudspeaker. The M2616 and M2008HF sets are equipped with a
loudspeaker for both handsfree voice communications and alerting tones.

Data

Asynchronous ASCII terminals and personal computers can be connected
through a RS-232-C interface directly to any Meridian modular telephone at
speeds from 110 byte/s to 19.2 Kbyte/s asynchronous and 56 or 64 kbit/s
synchronous to allow for data calls. Data capability is provided by the
optional Meridian communication adapter (MCA), which is a single printed
circuit pack (PCP) mounted within the telephone and works in conjunction
with the digital interface chip also residing in the telephone. The firmware
in the MCA serves as an interface between the user and the MSL-100
system for establishing data calls.
Meridian SuperNode MSL-100 Meridian Modular Telephones Reference Manual MSL11
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