May 2001
System Hardware Manual
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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
