The connection diagram on the attached file to prepare for installation.By date of installation (installation of IP access Area team DID) to implement customer's clients, ready to make a joint team to the area with the config. Because if a problem occurs in the implementation will be talking to the team.I do not recommend installing the IP thru way DID first, and then connect the device to the customer rarely later guys, because be true problems in device config, like guys.
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