Raisecom
RC3000-15 (P100R001) Hardware Description
8 Voice cards
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
110
Table 8-44
Interfaces on the Audio card
Name
Type
Description
1–4
RJ45 interface
Every 4 voice interfaces use 1 RJ45 interface.
N/A
RJ45 interface
Reserved
Interface parameters
Table 8-45 lists parameters of magneto telephone interface on the TEST card. Table 8-46 lists
parameters of FXS interfaces on the TEST card.
Table 8-45
Parameters of the magneto telephone interface on the TEST card
Parameter
Description
Coding scheme
A-law
Bit rate
64 kbit/s
Audio port impedance
100 kΩ (high impedance) during ringing
600 Ω (low impedance) under other situations
Effective transmission
bandwidth
300–3400 Hz
Gain frequency features
The Rx (A/D) gain ranges from -10 to 16 dB, and is 0 dB by
default. Its step is 0.1 dB.
The Tx (D/A) gain ranges from -17 to 8 dB, and is -3.5 dB by
default. Its step is 0.1 dB.
Frequency distortion
300–3000 Hz; < 0.5 dB
3000–3400 Hz; < 3.0 dB
Total distortion (1020
Hz)
0 to -30 dBm0; < 33 dB
-30 to -40 dBm0; < (33–22) dB
-40 to -45 dBm0; < 22 dB
Gain change according to
level
+3 to -40 dBm0; ∆ < 0.5 dB
-40 to -50 dBm0; ∆ < 1.0 dB
-50 to -55 dBm0; ∆ < 3.0 dB
Degree of unbalance
about earth
300–600 Hz: > 40 dB
600–2400 Hz: > 46 dB
2400–3400 Hz: > 41 dB
Idle channel noise
< -67 dBm0p
Ringing voltage
Typical 75 VAC sinusoidal wave/30 Hz
