ESC2420 User Guide version1.0
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II. Configuration and Installation with other equipments
1. Connect to PBX
The telephones that can be directly connected to the gateway are two. You may connect more than two
telephones to use Internet call using PBX. You may connect the gateway to PBX, and you can make
Internet call from any telephone that is connected to PBX. But you may only make two simultaneous
Internet calls at once since the Gateway has only two FXS ports. For more detailed information regarding
the installation, contact the specialist.