Q.7xx | Article about Q.7xx by The Free Dictionary
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Q.7xxA group of signaling standards from the ITU for SS7 communications. Also known as "Series Q Recommendations." MTP uses Q.701-Q.704, Q.706 and Q.707; SSCP uses Q.711-Q.714 and Q.716; TUP uses Q.721-Q.725; ISUP uses Q.761-Q.764 and Q.766; TCAP uses Q.771-Q.774. Q.770-Q.795 are used for monitoring and testing. See SS7.