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Call forwarding can be Conditional or Unconditional. Conditional call forwarding only works when the conditions set by the customers met while Unconditional call forwarding works in all cases irrelevant of network coverage. In Europe, most networks indicate that unconditional call forwarding is active with a special dial tone. When the phone is ...
Remote call forwarding is also a means for a suburban business to obtain a city-centre local number (with its full large-city coverage area) for inbound calls; while cheaper than a foreign exchange line, this can reduce long-distance telephony costs in markets where local calls are flat-rated but trunk calls are expensive.
A complete description of the IN emerged in a set of ITU-T standards named Q.1210 to Q.1219, or Capability Set One (CS-1) as they became known. The standards defined a complete architecture including the architectural view, state machines, physical implementation and protocols.
Please check the number and dial again, or call your operator to help you. Most of these messages often include the phrase "Your call cannot be completed as dialed." Sometimes a message would say to first dial a 1 or a 0 (the toll prefix for a trunk call) plus the area code of the called number. A message may also be played when 0 or 1 followed ...
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For all of NASA’s high-tech advancements, it may surprise you to know that the agency used regular kitchen aluminum foil to save one of its most famous missions.
Differentiated services or DiffServ is a computer networking architecture that specifies a mechanism for classifying and managing network traffic and providing quality of service (QoS) on modern IP networks.