ARIA SOHO IP Hardware Description and Installation Manual
Issue 1
BOARD INSTALLATION
December, 2008
47
4.5.2 Modem Function Unit (MODU)
MODU should be installed on the MODU connectors (CN4) of the MBU, and provides an analog modem connection.
It supports Bell, ITU-T, V.34, V.32BIS, V.90 Protocol at a speed rate of 300bps up to 33Kbps, and automatic rate
negotiation.
FIGURE 4.5.2 MODU
4.5.3 CMU50PR (Call Metering-50Hz and Polarity Reversal Detection Unit)
The Call Metering-50Hz and Polarity Reversal Detection Unit (CMU50PR) provides 3 Call Metering Detection circuits
for 50Hz and provides 3 channels of Polarity Reversal Detection for Call Metering or signaling. It can be installed on
the MBU, EMBU, CHB308, or CSB316.
4.5.4 CMU12PR (Call Metering-12KHz and Polarity Reversal Detection Unit
The Call Metering-12KHz (or 16KHz) and Polarity Reversal Detection Unit (CMU12PR) provides 3 Call Metering
Detection circuits for 12KHz (or 16KHz) and provides 3 channels of Polarity Reversal Detection for Call Metering or
signaling. It can be installed on the MBU, EMBU, CHB308, or CSB316.
FIGURE 4.5.3 CMU12PR AND CMU50PR
