
Customizing Signaling
117374-C Rev 00
5-57
Defining SSCOP/Signaling AAL
As defined by the ATM Forum, the SSCOP (or Q.SAAL) resides between the
ATM adaptation layer and the Q.2931 signaling layer. SSCOP/SAAL reliably
transports signaling messages between peer Q.2931 entities over the ATM
adaptation layer (Figure 5-2
).
Figure 5-2. SVC/PVC Signaling Protocol Stack
Bay Networks routers support SSCOP/SAAL functions as defined in the ATM
Forum ATM User-Network Interface specification (Versions 3.0 and 3.1).
Q.2931
Q.SAAL
Protocol
Data
encapsulation
ATM adaptation layer
(AAL5)
ATM layer
Physical layer
ATM0039A
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