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The Answer 1571 service, a cut-down version of BT Group's Call Minder service, allows a calling party to leave messages when the called party is engaged or does not answer within a fixed number of rings. The system allows for the storage of up to 20 messages, each of which can be up to 2 minutes long, for up to 60 days (or 20 days once they ...
The service charge may be charged per call, per minute, or a combination of the two. Originally, the per-call part could range from 5p to £16, and applies as soon as the call is answered, and the per-minute part could range from 1p to £8, and may apply either from the start of the call or after the first full minute.
A third number call or third party call is an operator assisted telephone call that can be billed to the party other than the calling and called party. The operator calls the third number for the party to accept the charges before the call can proceed. Time and charges was a service that could be requested of an operator before a call began ...
In Poland, numbers starting with 70, 30 and 40 are reserved for premium-rate services. 700, 701, 707 and 300 are "general" premium-rate services (usually charged per minute), 707 and 400 are assigned for tele-voting, mass-calls and so on (usually charged per call). Other numbers (702-706, 709, 301–309, 401-409) are reserved for future ...
For charged calls, dialed digits and charge number digits are outpulsed. SS7, being a high-speed and high-performance packet-based communications protocol, can communicate significant amounts of information when setting up a call, during the call, and at the end of the call. This permits rich call-related services to be developed.
Area code 700 of the North American Numbering Plan is a service access code (SAC) implemented by interexchange carriers. It is reserved for carrier-specific number assignments to special services or destinations.
16-line message format, or Basic Message Format, is the standard military radiogram format (in NATO allied nations) for the manner in which a paper message form is transcribed through voice, Morse code, or TTY transmission formats. The overall structure of the message has three parts: HEADING (which can use as many as 10 of the format's 16 ...
It had a master station which was a 700 type telephone mounted on a plinth with buttons, 'The Planset 625'. The master station and the extension stations could call and speak to each other and also handle and transfer outside calls. The difference between a Plan 105 and Plan 107 was that the latter had only one extension; the former had two.