SSUTR2
Encyclopedia
French SSUTR2 is the French national variant of the Telephone User Part (TUP)
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Telephone User Part (TUP)
Telephone User Part provides conventional PSTN telephony services across the SS7network. TUP was the first layer 4 protocol defined by the standards bodies and as such did notprovision for ISDN services. It has now largely been replaced by ISUP...
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