Call Flows

The call flows for the various scenarios are as follows:

Figure 6 RESUME Request Successful

Figure 7 RESUME Request Rejected

Figure 8 RESUME Request Times Out

New API Values

The following new PPL Events and Timers for the PPL Event Request message (0x44) and PPL Event Indication message (0x43) support this feature.

There are also two new PPL Timers.

PPL Component is 0x0005 (ISDN L3P Call Control)

PPL Event Requests

0x0014 - SUSPEND

0x0017 - RESUME

PPL Event Indications

0x0022 - SUSPEND Ack

0x0023 - SUSPEND REJECT

0x0024 - SUSPEND Timeout

0x0025 - RESUME Ack

0x0026 - RESUME Reject

0x0027 - RESUME Timeout

PPL Component L3 Call reference (0x0008)

PPL Timers

Timer ID Description Default Value (seconds)
0x0018 Q.931 T318 4
0x0019 Q.931 T319 4

See Programmable Protocol Language.
A condition that, when met, drives a state machine from one state to another. A condition that drives a Component out of its current state by invoking an associated primitive.
A programmable software component that uses PPL state machines that can be modified with the PPL Tool.
See Integrated Services Digital Network.
Setting up, monitoring, and tearing down calls.
Call signaling protocol for setup and termination of calls.