User Manual
SUPM1
page 19 of 94© KEYMILE December 2015 EN/LZTBU 372 129/1 RC
94
Functions and Specifications
Metering frequencies 12 kHz ± 30 Hz
16 kHz ± 40 Hz
Metering level at 200 Ω load 0.5 ± 0.1 V
RMS
0.9 ± 0.2 V
RMS
1.8 ± 0.2 V
RMS
2.4 ± 0.3 V
RMS
3.0 ± 0.3 V
RMS
Metering level unloaded
@ 0.5 V setting
@ 0.9 V setting
@ 1.8 V setting
@ 2.4 V setting
@ 3.0 V setting
≤ 0.9 V
RMS
≤ 1.7 V
RMS
≤ 3.0 V
RMS
≤ 4.0 V
RMS
≤ 5.0 V
RMS
Pulse and pause length V5CAS: According to the custom parameter set (CPS) of the
signalling interworking unit (VOIP1 unit).
MCAS: According to the CAS
Shaping smooth ramping avoids any noise
Table 16: Signalling specification - metering (continued)
Feature Rating or standard
Table 17: Signalling specification - polarity reversal
Feature Rating or standard
Polarity reversal with normal polarity (a-wire more posi-
tive than b-wire), off-hook
supported
Polarity reversal with reversed polarity (b-wire more
positive than a-wire), off-hook
supported
Polarity reversal with normal polarity (a-wire more posi-
tive than b-wire), on-hook
supported if I
LOOP
≥ 1 mA
Polarity reversal with reversed polarity (b-wire more
positive than a-wire), on-hook
supported if I
LOOP
≥ 1 mA
Delay CAS → a/b-wire ≤ 100 ms
Smooth polarity reversal supported
Table 18: Signalling specification - pulsed no battery
Feature Rating or standard
Pulsed no battery is supported in the V5CAS mode of opera-
tion only.
The SUPM1 unit supports two types of pulsed no battery:
a-wire and b-wire disconnected (default):
An information element (IE) “pulsed no battery” causes a dis-
connect of both wires.
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