Table 8-39 Parameters Of The Magneto Telephone Interface On The Audio Card; Table 8-40 Parameters Of Fxs/Fxo Interfaces On The Audio Card - Raisecom RC3000-15 Hardware Description

Raisecom
RC3000-15 (P100R001) Hardware Description

Table 8-39 Parameters of the magneto telephone interface on the Audio card

Coding scheme
Bit rate
Audio port impedance
Effective transmission
bandwidth
Gain frequency features
Frequency distortion
Total distortion (1020
Hz)
Gain change according to
level
Degree of unbalance
about earth
Idle channel noise
Ringing voltage
Return loss

Table 8-40 Parameters of FXS/FXO interfaces on the Audio card

Coding scheme
Bit rate
Audio port impedance
Parameter
A-law
64 kbit/s
100 kΩ (high impedance) during ringing
600 Ω (low impedance) under other situations
300–3400 Hz
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.
300–3000 Hz; < 0.5 dB
3000–3400 Hz; < 3.0 dB
0 to -30 dBm0; < 33 dB
-30 to -40 dBm0; < (33–22) dB
-40 to -45 dBm0; < 22 dB
+3 to -40 dBm0; ∆ < 0.5 dB
-40 to -50 dBm0; ∆ < 1.0 dB
-50 to -55 dBm0; ∆ < 3.0 dB
300–600 Hz: > 40 dB
600–2400 Hz: > 46 dB
2400–3400 Hz: > 41 dB
< -67 dBm0p
Typical 75 VAC sinusoidal wave/30 Hz
300–600 Hz: > 12 dB
600–3400 Hz: > 30 dB
Parameter
A-law
64 kbit/s
On-hook impedance is 2 MΩ.
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Description
Description
8 Voice cards
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