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service subscriber field (SSF)

The Service Subscriber Field (SSF) is a 4-bit long data field of an SS7 message, which is part of the Service Information Octet (SIO) belonging to the Message Signal Unit (MSU). Part of the Service Subscriber Field (SSF) is the 2 bit long Network Indicator (NI).

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Englisch: service subscriber field - SSF
Updated at: 23.06.2011
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