Description Product Reviews This unit is for SOME CISCO Telephones but not these CP6911, CP6941, CP6945, CP7911, CP7912, CP7940, CP7942, CP7960, CP7962, CP7970, CP7975. If you have one of the preceding Cisco Telephones use the standard muted splitter . The non muted 302-900 will work for any Cisco phone it is just the muted unit that may or may not work correctly. Allows the use of two handsets on one telephone with trainer mute. Ideal for telephone marketing training purposes.Black Yes this is designed to plug into the telephone and have two handsets plugged in. This will work even on digital sets as the signal going to the handset is analog. The plug on the cable is 4P4C, some call it RJ9 or RJ22. This unit is specifically designed for trainers who want their conversation always muted. This splitter has one port muted and the other for 2-way conversation. This allows the trainer to talk freely to the salesperson without being heard by the remote party. 4P4C two jacks x 4P4C plug From jack to plug is 4″ Used for telephone training RoHS Compliant 0 Reviews Hide Reviews Product Reviews