Linksys RTP300 User Guide - Page 82

Call Scenarios, PSTN to VoIP Call with and Without Ring-Thru

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Configuring the PSTN (FXO) Gateway Call Scenarios Call Progress Tone VoIP PIN Tone PSTN PIN Tone Outside Dial Tone Description This tone is played to prompt a VoIP caller to enter a PIN number. This tone is played to prompt a PSTN caller to enter a PIN number. During two-stage PSTN-gateway dialing and with a dial plan assigned, the Linksys ATA device collects digits from the VoIP caller and processes the number using the dial plan. The Linksys ATA device plays the Outside Dial Tone to prompt the VoIP caller to enter the PSTN number. This tone should be specified to sound different from the PSTN dial tone. Call Scenarios This section describes some typical scenarios where the Linksys ATA device can be applied. Some terms are introduced in the first few sections and reused in later sections. This section includes the following topics: • "PSTN to VoIP Call with and Without Ring-Thru" section on page 82 • "VoIP to PSTN Call With and Without Authentication" section on page 83 • "Call Forwarding to PSTN Gateway" section on page 85 PSTN to VoIP Call with and Without Ring-Thru The PSTN caller calls the PSTN line connected to the FXO port. Ring-Thru is disabled. After the call rings for a delay equal to the value in PSTN Answer Delay, the VoIP gateway answers the call and prompts the PSTN caller to enter a PIN number (assuming PIN authentication is enabled). After a valid PIN is entered, the caller is prompted to dial the VoIP number. A dial plan is selected according to the PIN number entered by the caller. If authentication is disabled, the default PSTN dial plan is used. Note than the dial plan choice cannot be 0 for a PSTN caller. NOTE: A PSTN Access List in terms of Caller ID (ANI) patterns can be configured into the Linksys ATA device to automatically grant access to the PSTN caller without entering the PIN. In this case, the default PSTN dial plan is also used. The same scenario can be implemented using Ring-Thru. When the PSTN line rings, Line 1 rings also. This feature is called Ring-Thru. If Line 1 is picked up before the VoIP gateway autoanswers, it is connected to the PSTN call. Line 1 hears a call waiting tone if it is already connected to another call. Linksys ATA Administration Guide 82

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Linksys ATA Administration Guide
82
Call Scenarios
Configuring the PSTN (FXO) Gateway
Call Scenarios
This section describes some typical scenarios where the Linksys ATA device can be applied.
Some terms are introduced in the first few sections and reused in later sections. This section
includes the following topics:
•
”PSTN to VoIP Call with and Without Ring-Thru” section on page 82
•
”VoIP to PSTN Call With and Without Authentication” section on page 83
•
”Call Forwarding to PSTN Gateway” section on page 85
PSTN to VoIP Call with and Without Ring-Thru
The PSTN caller calls the PSTN line connected to the FXO port. Ring-Thru is disabled. After the
call rings for a delay equal to the value in
PSTN Answer Delay
, the VoIP gateway answers the call
and prompts the PSTN caller to enter a PIN number (assuming PIN authentication is enabled).
After a valid PIN is entered, the caller is prompted to dial the VoIP number. A dial plan is
selected according to the PIN number entered by the caller. If authentication is disabled, the
default PSTN dial plan is used. Note than the dial plan choice cannot be 0 for a PSTN caller.
NOTE:
A
PSTN Access List
in terms of Caller ID (ANI) patterns can be configured into the Linksys
ATA device to automatically grant access to the PSTN caller without entering the PIN. In this
case, the default PSTN dial plan is also used.
The same scenario can be implemented using Ring-Thru. When the PSTN line rings, Line 1 rings
also. This feature is called
Ring-Thru
. If Line 1 is picked up before the VoIP gateway auto-
answers, it is connected to the PSTN call. Line 1 hears a call waiting tone if it is already
connected to another call.
Call Progress Tone
Description
VoIP PIN Tone
This tone is played to prompt a VoIP caller to enter a PIN number.
PSTN PIN Tone
This tone is played to prompt a PSTN caller to enter a PIN number.
Outside Dial Tone
During two-stage PSTN-gateway dialing and with a dial plan assigned, the Linksys
ATA device collects digits from the VoIP caller and processes the number using the
dial plan. The Linksys ATA device plays the
Outside Dial Tone
to prompt the VoIP caller
to enter the PSTN number. This tone should be specified to sound different from the
PSTN dial tone.