The Panasonic KX-T61610

Supports up to Six Up Coming Lines X Up to Sixteen Telephones Panasonic Desk Phones

The Panasonic KX-T61610 phone system is compatible with all of the Panasonic analog phone phones listed below like the KX-T7730, KX-T7030, KX-T7131, KX-T7020, and the KX-T7750 Desk Phones.
Panasonic Cordless Phones

The Panasonic KX-T616 is Compatible with all of the proprietary cordless phones like the KX-TD7880, KX-TD7885, KX-TD7894, KX-T7895, KX-T7896, and any analog type cordless phone that can be purchased from any Electronic Stores.