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The Gpthink NT-1 Plus is a NT1 Plus type of connector that has two built-in analog ports to allow direct hookup to the analog telephones from an ISDN line. Users will enjoy the benefits of high-speed ISDN services while they can still keep their existing analog telephones and fax machines.

Feature:
1. Conforms to ANSI and ETSI network and terminal interfaces
2. Compatible with 2B1Q basic rate services and standard ISDN terminals
3. Provides 2B+D ISDN basic rate service
4. Provides point-to-point and point-to-multipoint connections
5. 2 POTS ports connected to analog or G3 fax machine
6. Supports ISDN Supplementary Services (D channel: DSS1)
7. Local functions include internal POTS call, transferring POTS external call to another POTS phone  Connects to one POTS or one ISDN phone at remote power condition
8. Support Reverse Polarity