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Call Progress Monitoring

Closely analogous to call progress analysis, call progress monitoring, may be active during the entire length of a conversation. For example, when a call is placed across a PBX or in a country which does not provide for loop Current drop disconnect supervision, it may be necessary for equipment to monitor for a "re-order" or dial tone to determine that the caller hung tip. This Would be classified as call progress monitoring since it Must take place during the entire call, not, just when a number is dialed or a transfer is initiated.