12Mt; Functions And Appearance - Raisecom RC3000-15 Hardware Description

Raisecom
RC3000-15 (P100R001) Hardware Description

8.5 12MT

8.5.1 Functions and appearance

Panel
The 12MT is a 12-way magneto telephone access card. It provides the
following functions:
 Provide 12 magneto telephone interfaces.
 Support configurable gain:
– The Rx A/D gain ranges from -23 to +2 dB, and is 0 dB by default.
– The Tx D/A gain ranges from -17 to +8 dB, and is -3.5 dB by
default.
 Support configuring signaling mode through software:
– Support original signaling and reverse signaling. By default, it is
original signaling.
– Support signaling occupation a-bit and b-bit. By default, it is a-bit.
 Support configuring signaling mode (original signaling and reverse
signaling).
 Support overcurrent protection for voice interfaces and ringing output.
 Support online software upgrade.
Avoid short circuit when the 12MT card is running. If short
circuit occurs and ringing lasts 10 minutes, the 12MT card will
be damaged.
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Function
8 Voice cards
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