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-
Cable impedance : 100 ohms at 96 kHz;
-
Loop attenuation : < 10 dB/km at 96 kHz;
-
Round trip delay : < 1 sec / 100 m;
-
Wire diameter : 0,5 mm;
-
Bit error rate : 10
Note: If wires are connected together, joints give additional attenuation. Also an Intermediate
Distribution Frame in the cable effects the overall cable characteristics.
More information on the S
At the ISPBX side model 25-S
-
directly to a DTX-I
-
via a PNT1 to a DLC-U, a DLC-C/D or a DOC
-
via a PNT1/L to a DLX-U/L
-
directly to the PMC-G on board S
The DOC (Digital Operator Card) is located on a PMC-MC/HR/LU (not on the PMC-G). In
case the PNT1 is used the maximum allowed cable length is increased with 1500m (depending
on the cable characteristics). Note that for the connection between the DLC-C/D/U or the
DOC and the PNT1 only one twisted pair is required. In the figure below the possible
configurations are depicted.
ISPBX
DTX-I
DLCC/D/U or DCC
Figure 2-2 Connection Configuration for Model 25-S
Note: Only one supervisor console may be connected to one S
be connected.
16
-7
.
bus agreements is found in the CCITT 1.430 recommendation.
0
or model 35 can be connected :
0
bus.
0
ISDN 2B+D
-Interface,
S
0
4-wire, 192kbps
ISPBX 2B+D
U
-Interface,
S
2-wire, 152kbps
Model 25 (
Model 35
Model 25 (
Model 35
ISDN 2B+D
S
-Interface,
0
4-wire, 192kbps
or Model 35.
0
bus and no other equipment can
0
S
)
0
S
)
0
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