Miscellaneous Service Board (Misb); Misb Function Specifications - STARPLUS DHS-L Technical Manual

2-10
Chapter 2 - Description and Installation

Miscellaneous Service Board (MISB)

The MISB has the necessary circuitry required to perform conferencing, paging, tone and
cadence generation, Music-On-Hold (MOH) and Background Music (BGM), internal
melody generation, and multi-purpose dry relay contacts (specifications are listed in
Table 2-3
used by the system and stores the tones in EPROM using the mu-law ( -law) method.
Function
Music Input (2)
Paging Output (2)
Relay Contacts/Loud Bell (2)
). The MISB generates all of the system cadences and audible call progress tones
Table 2-3: MISB Function Specifications
Termination
Impedance
Input Level
Termination
Impedance
Output Level
Contact Type
Max. Rated Voltage
Max. Rated Current
Max. Rated Power
DHS- L Gener al Descr iption
Specification
Input Transformer (non-grounded)
Ω
600
-15 dB
Input Transformer (non-grounded)
Ω
600
-10 dB
Dry, Form A
50 VDC
1.0 Amp
30 VA
µ