What equipment is used to deliver the E1 services?

Usually, the service is handed off to the customer on a Customer Premise Equipment (CPE). This device can be an AudioCodes M500, AudioCodes M800 or an AudioCodes M1000. The port labeled PRI / E1 is configured as the handoff port and the customer connects the E1 port on their PBX to this provisioned port to use the service.