305 BASE LEVEL COMMUNICATIONS FUNDAMENTALS Flashcards
DESCRIBE TRUNK T-1 AND TRUNK E-1
a. Trunk E-1 - the European equivalent of the North American T-1 it carries information at the rate of 2.048Mbps. It has a total of 32 channels, 30 for voice and data, one channel for signaling, and one channel for framing and maintenance.
b. Trunk T-1 - the standard transmission in North America that carries information at the rate of 1.544Mbps. There are two types of T-1s. One is your standard that uses 24 channels for 24 separate phone lines. The other is called T-1 PRI and it uses 23 channels for voice and one for signaling (Caller ID).
FYI Voice Channels are called B-channels (Bearer) and Signaling Channels are called D-channels (Data)
.2 Identify the different phone switches and the services provided.
Capodichino
MFS (Multifunctional Switch) Nortel SL-100 - This switch incorporates the combined functions of a SA (Stand-alone switch) and an EO (End office) switch.
OPT11 (Option 11) - Provides conversion from E-1 to T-1 trunks.
Callegra - Voicemail System.
Gricignano
SA (Stand-alone switch) Nortel SL-100 - Functions solely as a tandem switch in the DSN
OPT11 (Option 11) - Provides conversion from E-1 to T-1 trunks.
Callegra - Voicemail System.
Gaeta
Tandem switch Nortel CS1000 - Receives traffic from a switch and passes the traffic along to another switch. The tandem switch is usually not connected directly to an end user and does not route the information directly to its final destination.
OPT11 (Option 11) CO-PILOT - Provides Voice mail service.
Bagnoli (JFC) Differs from previous switches.
AVAYA Definity switch
The system runner communication provides the following components:
System Access Terminal (SAT) - allows remote connection for administration report.
Message Manager – access to AUDIX voice processing on a personal computer.
.3 Describe the following components of the DRSN system:
a. IST-40 40 (Integrated Services Telephones) - a 40 line key telephone with a built in isolator that can operate with both a RED and BLACK switch.
b. KY-68 - a secure field phone used for encrypting/decrypting voice traffic and provide secure digitized data.
c. RSU-1 Switch (Remote Switch Unit) - a digital switching system which is deployed at a remote point from a host digital switch.
