NEC Electra Elite 192, Руководство по оборудованию

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Issue 6 Electra Elite
2 - 10 System Specifications
4.4 Outside Line Types
The following outside lines can be used with the Electra Elite 192
system.
2-wire, Loop Start or Ground Start Trunks
2-wire, 2-way DID Lines (Dial Pulse or DTMF)
4-wire, E&M Tie Lines (Type I or V, Dial Pulse, or DTMF)
Digital Trunk FT1 (Loop Start, Ground Start, Tie Line (E&M), or
DID Signaling)
ISDN-BRI Trunks
ISDN-PRI Trunks
VoIP Trunks (Internet Protocols)
Refer to Table 1 FIC, REN, SOC, and Jack Types for Electra Elite
System ETUs in the Regulatory Information section in this manual
for a detailed list of Facility Interface Codes, Ringer Equivalence
Numbers, Service Order Codes and Jack Types.
4.5 Transmission, Network, and Control Specifications
4.5.1 Transmission
Data Length
From Multiline Terminal to ESI(8)-U10 ETU: 23 bits
From ESI(8)-U10 ETU to Multiline Terminal: 23 bits
Data Transmission Rates:
Between ESI(8)-U10 ETU and Multiline Terminal:
184K bps (voice and signaling)
Scanning Time for each Multiline Terminal: 32 ms.
4.5.2 Network
Time Division Multiplexing allows transmission of a
number of separate data, voice and/or video
simultaneously over one communications medium. The
information below indicates the specifications the Electra
Elite 192 system uses for switching, clock, data bus,
timeframe.
TDM Switching: PCM (µ Law)
TDM Clock: 2.048 MHz