Power Requirements; Voice - Nortel Meridian SL-100 Reference Manual

4-4 Performance specifications
Table
M2016S, M2216, and M2616 tone frequency combinations
Tone
3
4
Note: A 500-Hz buzz signal is provided for incoming call notification while the
receiver is off-hook.

Power requirements

Voice

The M2006, M2008, M2008HF, M2616, (basic configuration including
display module), and M2216 are loop-powered. Loop power uses a 30-V dc
source, and assumes 3500 foot (1067 m) maximum loop length of 24 AWG
polyvinylchloride (PVC) (0.5 mm) standard twisted wire with no bridge
taps. Cables longer than 3500 feet could exceed the maximum 15.5 dB loss
at 256 KHz. For loop lengths longer than 3500 feet, the loop should use 24
AWG or larger wire with polyolefin, polyethelene, or Teflon insulation.
Table 4-4 summarizes the power requirements.
Note: The loop length limit is defined by a 15.5 dB loss at 256 KHz.
Longer lengths can be determined using the wire's gauge and insulation.
The Handsfree feature, which is integrated into the M2008HF, M2616, and
the sets, requires no additional power.
Table

Power requirements

Set type
M2006
M2008
M2008HF
M2016S
555-4001-114 Standard 10.02 November 1999
4-3xxx
Frequencies
333 Hz, 250 Hz
333 Hz, 250 Hz
4-4xxx
Loop power
Basic configuration
Basic configuration
Basic configuration (with
handsfree and display)
No
Warble rate
10.4 Hz
2.6 Hz
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Additional power (power
supply board) required
Data, external alerter
Data, external alerter
Data, external alerter
All configurations
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