How can i convert public switched telephone network (PSTN) to a voice over IP (VOIP) system without replacing analog phones?
There a PABX in current PSTN system.
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Hi Monica,
First you need to have a VoIP account set up on the 7390 for the Proxy settings of the IP of Fritzbox.
After that you have to point the SPA PSTN dialplan at that VoIP DID.
For example – If your Pennytel number on 7390 is 0246587932 then you have to write dialplan 8 on the SPA as : (S0<:[email protected]>) And here you also have to make sure that your PSTN line is enabled.
I have mentioned the basic setting for it. Change the settings as mentioned below for it to work.
Proxy and Registration
Proxy: IP of Fritzbox
Make Call Without Reg: Yes
Ans Call Without Reg: Yes
Audio Configuration
Preferred Codec: G711a
Dial Plans
Dial Plan 8: (SO<VoIPnumber on 7390@IP of 7390>)
VoIP -To-PSTN Gateway Setup
VoIP-To-PSTN Gateway Enable: Yes
PSTN Ring through Line 1: No
PSTN CID for VoIP CID: Yes
PSTN Caller Default DP: 8
FXO Timer Values (sec)
VoIP Answer Delay: 1
PSTN Answer Delay: 2
International Control
FXO Port Impedance: 220+820 Â Â Â Â 120nF
SPA To PSTN Gain: 2
PSTN To SPA Gain: 4
Line-In-Use Voltage: 37 (this varies at different situations)
I hope this answer was useful to you.
