Technology Background - Linksys SPA1001 Administrator User Manual

Chapter 1 Introducing Linksys Analog Telephone Adapters
Table 1-4
Feature
Signaling Hook Flash
Event
Configurable Dial
Plan with Interdigit
Timers
Polarity Control
Calling Party Control
Report Generation and
Event Logging
Syslog and Debug
Server Records

Technology Background

This section provides background information about the technology and protocols used by the ATA. It
includes the following topics:
•
•
Document Version 3.1
Linksys ATA Features
Description
The Linksys ATA can signal hook flash events to the remote party on a
connected call. This feature can be used to provide advanced mid-call
services with third-party-call-control. Depending on the features that the
service provider offers using third-party-call-control, the following three
Linksys ATA features may be disabled to correctly signal a hook-flash
event to the softswitch:
•
•
•
You can configure the length of time allowed for detection of a hook flash
using the Hook Flash Timer parameter on the Regional tab of the
administration web server.
The Linksys ATA has three configurable interdigit timers:
•
•
•
The Linksys ATA allows the polarity to be set when a call is connected and
when a call is disconnected. This feature is required to support some pay
phone system and answering machines.
Calling Party Control (CPC) signals to the called party equipment that the
calling party has hung up during a connected call by removing the voltage
between the tip and ring momentarily. This feature is useful for
auto-answer equipment, which then knows when to disengage.
The Linksys ATA reports a variety of status and error reports to assist
service providers to diagnose problems and evaluate the performance of
their services. The information can be queried by an authorized agent,
using HTTP with digested authentication, for instance. The information
may be organized as an XML page or HTML page.
The Linksys ATA supports detailed logging of all activities for further
debugging. The debug information may be sent to a configured Syslog
server. Via the configuration parameters, the Linksys ATA allows some
settings to select which type of activity/events should be logged, as for
instance, a debug level setting.
Session Initiation Protocol, page 1-10
Network Address Translation, page 1-10
Call Waiting Serv
Three Way Call Serv
Three Way Conf Serv
Initial timeout (T)—Handset off hook, no digit pressed yet.
Long timeout (L)—One or more digits pressed, more digits needed to
reach a valid number (as per the dial plan).
Short timeout (S)—Current dialed number is valid, but more digits
would also lead to a valid number.
Technology Background
Linksys ATA Administrator Guide
1-9