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PABX to PABX

I have a customer who needs to connect his two branches PABX through a VOIP such that a user can just dial an extension to reach the other side, his PABX does not support E&M signaling, and he need the call to be done from both sides. should i use FXS to FXS configuration, and connect both sides to CO lines at the PABX, or FXS to FXO is better as I know that FXO- FXO is not supported.

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Anonymous
N/A

Re: PABX to PABX

Assuming digital signalling does not apply here.

yes, you could use fxs-fxo to set up a connection

trunk as a tie line between two pabx.

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