Hardware Technical Reference Manual
Music on Hold and Paging Specifications
Music On Hold
Paging
Pin Allocations
MX Line and Trunk Connector
Analog lines and trunks are connected to the MX controller using a 25-pair male Amphenol-type
connector.
Note: Music on Hold is not supported on the ASU II.
Table 33: MOH Electrical Specifications
Input impedance 600 ohms nominal
Maximum input voltage SELV limits
Maximum input audio level without
clipping
0.4 Vrms (mono input)/0.2 Vrms (each stereo input),
THD @ -40 dB
Maximum PCM level -15 dBm
Note: Paging is not supported on the ASU II.
Table 34: Paging Electrical Specifications
AC input impedance 600 ohms nominal
DC load 300 to 100 ohms for loop current 20 mA to 90 mA
Maximum DC current 90 mA with PAGE1 and PAGE2 leads
Maximum input voltage SELV limits to all connections
A to D gain +3 dB
D to A gain -3 dB
D to D loss > 25 dB @ 1 kHz
Maximum relay rating 0.5 A 40 Vac, 2 A 30 Vdc
Table 35: Amphenol Line/Trunk Connector Pin Allocation
Pin Number Signal Pin Number Signal Board
1 PFT_LN_T1 26 PFT_LN_R1 Main
2 PFT_LN_T2 27 PFT_LN_R2
3 LN_TIP3 28 LN_RING3 Option
4 LN_TIP4 29 LN_RING4
5–30––
6 – 31 – –
7–32––
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