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   Support Center Application Notes ISDN Application Notes ISDN S0
 
  
1. ISDN S0 application note.

Note : Only Vigor2930VS supports the S0 function at the moment.

Vigor2930VS have the new S0 interface which allows users to connect ISDN phone to the S0 interface and make calls to ISDN or VoIP networks flexibly. Let's follow the instruction below and see how to use the S0 function.

What is S0 ?

The ISDN S0(1) port on Vigor2930 series is fixed to connect phone forever and the LED on the Connector will light orange always. However ISDN S0(2) port on this device is configurable for connecting phone or accessing Internet according to the settings that you adjust on WEB UI ( please refer to VoIP >> Phone Setting for detailed information ).

Vigor2930 "S" series models support two ISDN ports. ISDN S0 port (1) is dedicated for ISDN phone ( NT mode ) and ISDN S0 port (2) is configurable for ISDN line ( TE mode ) and phone ( NT mode ) if required.

Take the figure below as an example

1. ISDN port 1 can connect to two ISDN phones.
2. ISDN port 2 can connect to ISDN PBX or ISDN line from ISP.


Vigor2930 possibility



1. S0 loop-through to ISDN Network

(1.1) Marking an outgoing call
GO to VoIP >> Phone Settings >> ISDN-S0 then select Default Call Route.
When Default Call Rout is VoIP, please press #* to loop-through then dial the Callee's ISDN number.
When Default Call Route is ISDN, please press the Callee's ISDN number directly.



(1.2) Receive an incoming call
Go to VoIP >> Phone Settings >> ISDN2-TE and select which port to receive the incoming ISDN call.





2. FXS loop-through to ISDN network

(2.1) Marking an outgoing call
Go to VoIP >> Phone Settings >> Phone1 then select Default Call Route.
When Default Call Route is VoIP, please press #* to loop-through then dial the Callee's ISDN number.
When Default Call Route is ISDN, please press the Callee's ISDN number directly.



(2.2) Receive an incoming call
Go to VoIP >> Phone Settings >> ISDN2-TE and select which port to receive the incoming ISDN call.





3. ISDN ON-net / Off-Net

Please refer to the follow link ISDN FXO application notes.



4. S0 to VoIP network

(4.1) Make VoIP calls.
Select the default SIP account for S0 port.
Since one S0 port can connect two ISDN phones, we have internal MSN number 30-39 which can set different ISDN phones to call via different SIP accounts.



(4.2) Receive VoIP calls.
Set the ring port ISDN1-S0 and indicate the MSN number.



Page last modified : 13 October 2008