1. Signalling Protocols Q.2931 BISUP MTP3 Sig A Sig B1 Sig B2 IDL CORBA
SAAL
ATM
PHY
BISUP
MTP3
Sig A
Sig B1
Sig B2
IDL
CORBA
SSCF
SSCOP
CPCS
SAR

2. SAAL Signalling ATM Adaption Layer User side Network side UNI-SSCF
SSCOP
CPCS
SAR
NNI-SSCF
(Service Specific Coordinate function)
(Service Specific Coordination Oriented Protocol)
(Common Part Convergence Sub-layer )
(Segmentation And Reassembly)

3. Basic Call State Model
O-BCSM
T-BCSM
Sig x 1 2
State C
State B
State A

4. Fabric Contol Fabric Control Agent GSMP Fabric Control ORB FSR ATM
VTT API
Fabric Control Agent
GSMP
Fabric Control
ATM
ORB

5. Control Abstractions Service Control (INAP, CORBA, IDL, Java)
Fabric Control Agent
FSR
Service Control
Call Control
(INAP, CORBA, IDL, Java)
Connection Control
Node Control
Switch Control
Fabric Control (GSMP, etc.)
(switch/port config., port mgmt,
conn. mgmt, statistics, event messages)
Access : Q.2931
Internal : BISUP

6. ATM Switch Control
Nodes
ATM Switch Controller
ATM Switch