Pairing Samsung Blackjack with bluetooth-enabled land line phones

Yesterday I bought an at&t EP5632-2 digital cordless telephone with bluetooth technology, and tried pairing my BlackJack with it, and it paired up, and the BlackJack appears in the landline's list of devices, but I keep getting the error message that the pairing was unsuccessful, and there is an "X" on top of my bluetooth icon on the base unit's display.

Has anyone else had pairing troubles with their BlackJack and other Bluetooth-enabled digital cordless telephone systems?

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I don't know about it.But is it possible?If yes can you tell me the procedure?I am waiting for ypur reply.