Symmetric Rtp; Call Progress Tones; Call Scenarios - Linksys SPA1001 Administrator User Manual

Call Scenarios

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PSTN Call to Ring Line 1
This feature allows a PSTN caller to ring Line 1. When the PSTN line rings, the PSTN Line makes a
local VoIP call to Line 1. If Line 1 is busy, it stops. After a given number of rings, the VoIP gateway
picks up the call.

Symmetric RTP

Symmetric RTP is used to send audio RTP to the source IP and port of the inbound RTP packets. This
facilitates NAT traversal.
Table 1-33
Table 1-33 Symmetric RTP Parameters
Parameter
Symmetric RTP
Symmetric RTP

Call Progress Tones

Table 1-34 Call Progress Tones
Call Progress Tone
VoIP PIN Tone
PSTN PIN Tone
Outside Dial Tone
Call Scenarios
This section describes some typical scenarios where the SPA3102 can be applied. Some terms are
introduced in the first few sections and reused in later sections. This section includes the following
topics:
Linksys ATA Administrator Guide
4-8
Symmetric RTP, page 4-8
Call Progress Tones, page 4-8
lists symmetric RTP parameters.
Group
Line 1
PSTN
Line
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
SPA3102 collects digits from the VoIP caller and processes the number
using the dial plan. The SPA3102 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.
Chapter 4
Description
Enable symmetric RTP operation. If enabled, SPA3102
sends RTP packets to the source address of the last
received valid inbound RTP packet. If disabled,
SPA3102 sends RTP to the destination as indicated in
the inbound SDP. Default is yes.
Same as above. Default is yes.
Configuring the PSTN Gateway (FXO)
Range
Yes or
No
Yes or
No
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