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VDAC VoIP - 0x009C

This section contains information on PPL Component IDs and component-specific information for PPL Timers and PPL Events.

PPL Events

Event ID | Event Description
--- | ---
0x01 | Timer 1
0x02 | Timer 2
0x03 | Timer 3
0x04 | Timer 4
0x0A | Layer 4/L3P Outseize Control
0x0B | Layer 4/L3P Clear Request
0x14 | DSP Resource Available
0x15 | DSP Resource Unavailable
0x16 | DSP Resource Released
0x17 | DSP Resource Inconsistency
0x19 | RTP Port In Use
0x1A | Invalid Attributes
0x1B | Null Source in NPDI ICB
0x1E | Fax Start
0x1F | Fax End
0x23 | Modem Start (not supported)
0x24 | Modem End (not supported)
0x25 | RTP Timer Expired
0x26 | Modify Connection Attributes
0x27 | Modify Connection Attributes Response
0x28 | Media Inactivity Detection Timer Expired
0x403 | Dummy Event
0x404 | Channel In Service
0x405 | Channel Out of Service

Requests

PPL Event Indications
Event ID | Event Description
--- | ---
0x01 | Received Fax Start Event
0x02 | Received Fax End Event
0x05 | Received Modem Start Event (not supported)
0x06 | Received Modem End Event (not supported)
0x07 | Received RTP Timer Expired Event
0x08 | Received Media Inactivity Timer Expired Event
0x0A | Incoming Registration Request
0x0B | Registration Timer Expired
0x0C | Incoming Deregistration Request
0x0D | Registration Query Response

Important! When signaling is controlled by the H.323 software, these indications are not used by the host. Instead they are sent to the H.323 software which is controlling the call.

Purge Reasons

Reason | Description
203 | Layer 4/L3P Clear Wait Timeout
204 | DSP Resource Inconsistency (S13)
205 | DSP Resource Inconsistency (S4)
210 | DSP Resource Inconsistency (S11)
211 | DSP Resource Released (S11)
212 | DSP Resource Inconsistency (S21)
213 | DSP Resource Released (S21)

PPL Timers

The following table defines the new PPL Timers.

Timer Name and Hex ID | Default Value
DSP Response Wait Timer (0x01) | 500 ms
Guard Wait Timer (0x02) | 700 ms
Layer 4/L3P Clear Wait Timer (0x03) | 4000 ms
Fax End Wait Timer (0x04) | 5000 ms
Modem End Wait Timer (0x05) (not supported) | 5000 ms
Fax Start Validation Timer (0x06) | 100 ms
Modem Start Validation Timer (0x07) (not supported) | 100 ms

See Programmable Protocol Language.
Call processing layer of the CSP.
Outgoing call setup during real-time call processing on a specific channel.
Digital Signal Processor
Real-Time Transport Protocol. Supports transport of real-time data like interactive voice and video over packet-switched networks.
The point in the Excel platform where a DS0 connects to a network. Also known as a "socket."
Network Protocol Data Intelligence. Also called “Interworking,” it is a software product that operates within Excel’s Call Control (Layer 4) and Services (Layer 5) call processing layers. NPDI is meant to enhance Excel’s call processing product offering by allowing call processing layers (specifically Layers 4 and 5) to perform advanced analysis, generation, and conversion of Network Signaling (NS) Layer 3 information.
See Information Control Block.
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.
ITU-T standard defines a set of call control, channel setup, and codec specifications for transmitting real-time voice and video over networks that do not offer guaranteed service or quality of service.