Special adapter and short modular cord, used to combine phone lines from two separate single-line (RJ11) jacks to provide one two-line (RJ14) jack.
	
Great for phone systems that use two-line jacks, such as the Panasonic KX-TD816, TD1232 and TA1232.
	
A big time-saver if the phone company has supplied single-line jacks, or if you are upgrading from an older phone system that used single-line jacks.
	
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