Combo-CN88 CCL 2 Main 16 Intercom EPABX with 16 Pcs Beetel C11 PhonesINTERNAL and TRUNK CALLER LINE identification IN BOTH FSK and DTMF MODE, FLEXIBLE EXTENSION NUMBERING (1 4 DIGITS), INCOMING CALL RING and OUTGOING CALL CAN BE PROGRAMMED EXTENSION WISE CALL TRANSFER TO OTHER EXTENSIONS, MEMORY DIALING FACILITY UPTO 48 NUMBERS, CONFERENCE BETWEEN TELEPHONE MAIN LINE and 2 EXTENSIONS; CONNECTS TO DOOR PHONE (OPTIONAL) CONNECTS TO 2 TELEPHONE LINE and 16 EXTENSIONS, BEST IN CLASS HOLD MUSIC, WELCOME MESSAGE FOR 10 SEC,