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Interfaces and Terminals as of I7.8
Technical Data
107
sy
d-
023
9/2.
4
– I7.
8
– 0
7
.2009
Digital terminal interface S
•
Standard Euro ISDN interface
•
Phantom power supply min. 140 mA, limiting at approx. 170 mA,
terminal voltage 36...41 V
a/b analogue terminal interface
•
Voice path with A/D and D/A conversion (standard PCM, A-law)
•
Transmission as per ES 201 168 (level country-specific)
•
Constant current loop supply approx. 25 mA
(with loop resistances
≤
1000
Ω
)
•
Leerlaufspannung der Schnittstelle je nach Hardware-Version 38...58 V. Bei Kon-
figuration als Türe kann die Leerlaufspannung je nach HW-Version auf 24...30 V
sinken.
•
Receive pulse or DTMF dialling
•
CLIP display:
– A150/300: CLIP will be supported on all analogue terminal interfaces as of I7.6
MR2. However different CLIPs can only be sent to 2 analogue terminals simul-
taneously.
– 2025/2045/2065: Depending on the hardware version:
Interfaces on 2025/2045 mainboard: As of version "-4")
Interfaces on expansion cards: As of version "-3")
•
Ringing supply 40...43 V 50 Hz at load 4 k
Ω
; no DC voltage overlay (country-spe-
cific versions also with 25 Hz)
•
No control key detection
•
No charge signalling pulses