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PHONE-IN PROGRAMME CONSOLE
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| The Phone-in-Program Console is used to interface telephone lines with the broadcast mixing console which in-turn interfaces with the expert sitting in a studio. This unit has provision for receiving three telephone lines at a time. The system is based on the design developed by R&D department, All India Radio. |
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| Salient Features | |
| Conversation
with the remote participants in the live program. To transfer incoming messages to the panel expert in the Studio for direct communication. Music-on-hold. Interface with telephone line. Interface with studio equipment. |
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| System Description | |
| The
incoming calls on the telephone lines are visually indicated by LEDs
corresponding to each of the three telephone lines and a common ring
flasher LED. The phone-in-program co-coordinator can talk to the listener
by using the telephone switcher of each telephone line and telephone
hand set. Then he can hold the telephone line for the listener and
feed music to the listener during the waiting period. At the appropriate
time in the program, the listener can be connected to the expert sitting
in the broadcast studio by using telephone switcher. The listener's query, the expert's response and the conversation between the listener and the expert can be broadcast live. When the interaction is on, the phone-in-program co-coordinator can co-ordinate with other listeners on the other two telephone lines and hold the lines. Then he can transfer them to the expert at the arrival of their turn. |
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| Technical Specification | |
| Input Level | : i. Interface with telephone line and telephone line input/ output. |
| ii. Line Level audio input from mixing console. | |
| Output Level | : Line level audio output to Mixing Console |
| Ring Indicator | : Works with normal ringing voltage of DOT Telephone Exchange. |
| Common Ring Indicator | : Common flashers whenever there is "Ring" in anyone of the lines. |
| Frequency Response | : 300 Hz to 3400 Hz ± 0.5 dB. |
| Signal-to-Noise Ratio | : Better than 50 dB. |
| Over Voltage Protection | : Input 1 and Input 2 are provided with protection against transients. |
| Level Indication | : LED display for Input and Output. |
| Power Supply | : AC 230 V, 50 Hz Single Phase |
| Application | |
| Live interactive radio programs. Live broadcast of dispatches from On-the-Spot reporters covering major events. Live Broadcast covering from foreign correspondents. Broadcasting interview of eminent persons in their place of work. |
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