ESI / Estech Phone Sennheiser Headset Compatibility List

ESI / Estech Systems, Inc.

Phone Type	Direct Cable	Additional Requirement
Call Processor (Predictive Dialer)	CSTD 01	UI 710
IVX C-Class, E-Class, S-Class, X-Class:	CSTD 01	UI 710
12-Key Digital Feature Phone 24-Key Digital Feature Phone	CSTD 01	UI 710
48-Key Digital Feature Phone, 48-Key IP Feature Phone, 48-Key Remote IP Feature Phone,	CSTD 01