SPOTLIGHT: PCM-30 provides conversion between ITU-T G.703 standard E1 framed interface and up to 30 channels of (FXS/FXO/E&M/RS232/V35/Eth/….) interfaces. The equipment is used to converge the signals such as voice, data and image into a standard 2M interface via various interface boards, and realize point-to-point transmission. V35, 2/4 E&M, RS-232, and Ethernet ports as options along with voice over same E1. FEATURES: 1. E1 G.703/G.704 to POTS FXS/FXO conversion; 2. V35, 2/4 E&M, RS-232, and Ethernet ports as options along with voice. 3. The voice interface supports caller ID display; 4. Provides two clock types: E1 master clock, E1 line clock 5. Provides 2 kinds of loop-return function, namely E1 self-looping at local end, ordered self-loop at remote end; 6. Realize the automatically rate set of local device to remote device 7. Has the function of pseudo-random code testing, convenient for opening of the circuit,and can be used as an error code instrument; 8. Realizes long-distance monitoring of local device to the remote device based on self-copyright IC; 9. E1 supports 75 Ohm unbalanced and 120Ohm balanced impedance at the same time; 10. Provides 30 voice channels, support calling number indication, DDI and other features; 11. Voice port supports O port and S port, O port connects switch and S port connects user’s phone; SPECIFICATIONS: E1 interface Interface standard: Conforms to G.703 standard Interface rate: N×64Kbps, N:1~31 Code: HDB3 Interface impedance: 75A (unbalanced), 120A (balanced) Connecter: BNC (75 A), RJ45 (120 A) Vibration characteristic: Satisfies G.742 and G.823 standard Clock type: internal-clock, line clock FXS phone port Ring voltage:75V Ring frequency:25HZ Two line input impedance:600A(hanging off) Wastage:40 db FXO switch port Ring test voltage:35V Ring test frequency:17HZ-60HZ Two line input impedance:600A(hanging-off) Wastage:40 db 2W/4W audio or 2W/4W E&M interface Impedance:200Ω+680Ω||0.1μF 4 lines AD gain:14 dB(tunable) 4 lines DA gain:-2 dB(tunable) 4 lines AD frequency characteristic:-0.2 – +0.2dB 2 lines AD frequency characteristic:-0.2 – +0.2dB 2 lines DA frequency characteristic:-0.2 – +0.2dB Return loss:40dB Degree of balance:70dB Mutual module rejection ratio:70dB Power rejection ratio:30dB Spare channel noise:≥65dB Loop impedance:600Ω V.35 interface Interface type: V.35 synchronous Velocity: N×64Kb/s (N =1~15) Clock mode: DCE 10Base_T interface interface type:10Base-T transmission speed:Nx64Kb/s(N = 1-15) protocol:link layer bridging RS232 interface Speed:≤19.2kbps auto-negotiation Mode:Asynchronous Receiver/Transmitter Physical Interface: RJ45 jack RS232 Synch interface Interface type:V.24 asynchronous (simplex, duplex is optional) Rate:4800bps, 9600bps,19200bps, optional Clock mode:DCE, DTE, optional Environmental Operating temperature: -25 C~+70 C Storage temperature: -40 C~+80 C Relative temperature:95% (uncondensed) Power supply option I – DC-48V,range DC-36V~DC-72C option II – AC220V,range AC165V~AC265V

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