15–1
Chapter 15. IP SUB-MUX
15.1 Introduction
Subsystem Multiplex – referred to throughout this manual as Sub-Mux – is a secondary
framing structure that combines IP traffic with any currently available combination of framing
and interface type (excluding IP itself). The composite data rate to the modulator and from
the demodulator is referenced to the primary, non-IP interface rate by a specific ratio selected
by the user.
15.2 Available Ratios
The IP portion of the modem traffic can be either smaller or larger than the primary interface by
the following ratios:
Ratio IP Portion of Modem Traffic
1/59 IP traffic is one-fifty-ninth the primary
IP traffic is one-thirty-ninth the primary
1/19 IP traffic is one-nineteenth the primary
1/9 or 9 IP traffic is one-ninth the primary, or 9 times the primary
1/8 or 8 IP traffic is one-eighth the primary, or 8 times the primary
1/7 or 7 IP traffic is one-seventh the primary, or 7 times the primary
1/6 or 6 IP traffic is one-sixth the primary, or 6 times the primary
IP traffic is one-fifth the primary, or 5 times the primary
IP traffic is one-fourth the primary, or 4 times the primary
2/7 or 7/2 IP traffic is two-sevenths the primary, or 3.5 times the primary
1/3 or 3 IP traffic is one-third the primary, or 3 times the primary
2/5 or 5/2 IP traffic is two-fifths the primary, or 2.5 times the primary
3/7 or 7/3 IP traffic is three-sevenths the primary, or 2.33 times the primary
1/2 or 2 IP traffic is one-half the primary, or 2 times the primary
3/5 or 5/3 IP traffic is three-fifths the primary, or 1.66 times the primary
2/3 or 3/2 IP traffic is two-thirds the primary, or 1.5 times the primary
3/4 or 4/3 IP traffic is three-fourths the primary, or 1.33 times the primary
4/5 or 5/4 IP traffic is four-fifths the primary, or 1.25 times the primary
1/1 IP traffic equals the primary
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