May 2001
System Hardware Manual 2 - 25
A6-324000-642-01 – Release 4.0
May 2001
4.4 Outside Line Types
The following outside lines can be used with the Xen system.
✆ 2-wire, Ring In, Loop Out Trunks (Dial Pulse or DTMF).
(Dial Pulse not available in New Zealand)
✆ 2-wire, DID Lines (Dial Pulse or DTMF).
(Analogue DID is not available in New Zealand)
✆ 4-wire, E&M Tie Lines (Type I or V, Dial Pulse, or DTMF)
✆ ISDN Basic Rate Trunks (ETSI)
✆ ISDN Primary Rate Trunks (ETSI)
4.5 Transmission, Network, and Control Specifications
4.5.1 Transmission
✆ Data Length:
From Multiline Terminal to ESI(8)-U13 Unit: 23 bits
From ESI(8)-U13 Unit to Multiline Terminal: 23 bits
✆ Data Transmission Rates:
Between ESI(8)-U13 ETU and
Multiline Terminal: 84K bps
(voice and signalling)
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 Xen
system uses for switching, clock, data bus, timeframe:
✆ TDM Switching: PCM (A Law)
✆ TDM Clock: 2.048 MHz
✆ TDM Data Bus: 8 bit
✆ TDM Timeframe: 125 µs
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