Configuring the PSTN (FXO) Gateway on the SPA3102
Call Scenarios
Cisco Small Business ATA Administration Guide 96
6
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 ,
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 in terms of Caller ID (ANI) patterns can be configured into the
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 . If Line1 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.
VoIP to PSTN Call With and Without Authentication
This section describes three scenarios with and without authentication and
includes the following topics:
 Using PIN Authentication (SPA3102) section on page 96
 Using HTTP Digest Authentication (SPA3102) section on page 97
 Without Authentication (SPA3102 and SPA8800) section on page 98
Using PIN Authentication (SPA3102)
This scenario assumes that the PSTN Line has a different VoIP account than the
Line 1 account. The VoIP caller calls the FXO number, which auto-answers after
. The ATA device then prompts the VoIP caller for a PIN. When a
valid PIN is entered, the ATA plays the and prompts the caller to
dial the PSTN number.
To Next Page
Loading...
Need help?
General
