Humboldt State University owns and operates its own telephone switch, often referred to
as a PBX (Private Branch Exchange). The campus PBX is a Model MD110,
manufactured by Ericsson.
The MD110 supports two kinds of signaling; digital and analog. Digital telephones are
proprietary, and are designed to take full advantage of the rich feature set available with
the MD110.
The Ericsson digital telephones are used with the MD110 telephone switch and provide
single-key access to many of the MD110 features.
The 661 instrument offers on-hook dialing, programmable function keys, adjustable
ringer tone and volume, speaker phone, and the display feature which displays date,
time, number dialed, as well as programming information.
Important Note:
Digital and Analog telephones are NOT interchangeable.
Damage may result, either to the instrument or the PBX if these telephones are
plugged into the wrong jack. If unsure, please call extension 5000 for assistance.
Mar06 Digital 661Telephone User Guide 20