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November 2009 336
9 - Using the BSMI R2 Signaling
Capability
This chapter describes R2 signaling as used with BSMI-level call
control.
The chapter has the following sections:
CPE Signaling Model
Enabling the R2 Protocol
Brooktrout boards offer E1 CAS signaling for customer premise
equipment (CPE).
The protocols supported are:
ITU's R2 (Line Signaling and Inter-register Signaling) and
national variants
LEC protocols (Wink Start, Delay Dial, Immediate Start, FXO
Loop Start, FXS Loop Start, FXO Ground Start, FXS Ground
Start)
Dialogic's implementation of the R2 protocol contains a number of
parameters that are used to configure the module to conform to the
ITU recommendations (refer to ITU Blue Book, Signaling System
R2, Volume VI Fascicle VI.4, Q.421 - Q.424, digital line signaling,
and Q.440 - Q.458, compelled inter-register signaling). The fully
embedded R2 protocol stack consists of digital line signaling (R2