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ViewStation EX User Guide
118 www.polycom.com
❑ Area Code—This is the area code or STD code used in the area
where the system is located.
❑ Number A—This is the primary ISDN number assigned to the
system.
❑ Number B—This is the secondary ISDN number assigned to the
system.
❑ ISDN Switch Protocol—Select the appropriate ISDN switch
protocols. Contact the ISDN provider to determine the ISDN
switch protocol.
❑ ISDN Number Prefix—This prefix is used to access an outside
line if the system is behind a PBX.