Section 8 Network And Control - NEC Electra Elite IPK II General Description Manual

Document Revision 1
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UTSIDE
ECTION
The following outside lines can be used with the Electra Elite IPK II system.
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S 8
ETWORK AND
ECTION
8.1
5 - 14
L T
INE YPES
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 T1/FT1 (Loop Start, Ground Start, Tie Line (E&M), or DID
Signaling)
ISDN-BRI Trunks
ISDN-PRI Trunks
VoIP Trunks (Internet Protocols)
C
ONTROL
Transmission, Network, and Control Specifications
8.1.1 Transmission
Data Length:
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From Multiline Terminal to ESI(8)-U( ) ETU: 23 bits
From ESI(8)-U( ) ETU to Multiline Terminal: 23 bits
Data Transmission Rates:
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Between ESI(8)-U( ) ETU and Multiline Terminal: 184K bps
(voice and signaling)
Scanning Time for each Multiline Terminal: 32 ms.
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8.1.2 Network
Time Division Multiplexing (TDM) allows transmission of a number of
separate data and voice simultaneously over one communications
medium. The information below indicates the specifications the
Electra Elite IPK II system uses for switching, clock, data bus,
timeframe.
TDM Switching: PCM (µ Law)
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TDM Clock: 2.048 MHz
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TDM Data Bus: 8 bit
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TDM Timeframe: 125 µs.
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Electra Elite IPK II
Hardware Specifications