Page 81 - eBOOK FUNDAMENTAL OF TELECOMMUNICATION NETWORK
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Functions of each layer:
Layer Function
Defines the physical and electrical characteristics
MTP-1
of the signaling link
Provide reliability transfer of signaling messages
MTP-2 (CCS) between source and the destination
signaling node via a signaling link
Provide functionalities for routing of signaling
MTP-3 messages between signaling nodes. The routing
was performed by the STP signal nodes.
Performs basic telephone call connect and
TUP
disconnect. TUP is an analog protocol
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