VDAC VoIP - 0x009C

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

Event ID	Event Description
1	Timer 1
2	Timer 2
3	Timer 3
4	Timer 4
10	Layer 4/L3P Outseize Control
11	Layer 4/L3P Clear Request
20	DSP Resource Available
21	DSP Resource Unavailable
22	DSP Resource Released
23	DSP Resource Inconsistency
25	RTP Port In Use
26	Invalid Attributes
27	Null Source in NPDI ICB
30	Fax Start
31	Fax End
35	Modem Start (not supported)
36	Modem End (not supported)
37	RTP Timer Expired
38	Modify Connection Attributes
39	Modify Connection Attributes Response
40	Media Inactivity Detection Timer Expired
1027	Dummy Event
1028	Channel In Service
1029	Channel Out of Service

Event ID

Event Description

Timer 1

Timer 2

Timer 3

Timer 4

Layer 4/L3P Outseize Control

Layer 4/L3P Clear Request

DSP Resource Available

DSP Resource Unavailable

DSP Resource Released

DSP Resource Inconsistency

RTP Port In Use

Invalid Attributes

Null Source in NPDI ICB

Fax Start

Fax End

Modem Start (not supported)

Modem End (not supported)

RTP Timer Expired

Modify Connection Attributes

Modify Connection Attributes Response

Media Inactivity Detection Timer Expired

1027

Dummy Event

1028

Channel In Service

1029

Channel Out of Service

PPL Event Indications
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

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.

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.

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)

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