Yealink SIP-T21 - Manual (Page 9)

Table of Contents
ix
Busy Lamp Field (BLF) ....................................................................................................... 95
Call Recording .................................................................................................................... 97
Hot Desking ........................................................................................................................ 99
Intercom ............................................................................................................................ 101
Outgoing Intercom Calls .............................................................................................. 101
Incoming Intercom Calls .............................................................................................. 101
Multicast Paging ............................................................................................................... 103
Sending RTP Stream ..................................................................................................... 103
Receiving RTP Stream ................................................................................................... 105
Music on Hold ................................................................................................................... 106
Automatic Call Distribution (ACD).................................................................................. 107
Messages .......................................................................................................................... 109
Short Message Service (SMS) .................................................................................... 109
Voice Mail ...................................................................................................................... 111
Message Waiting Indicator (MWI) ............................................................................. 112
Troubleshooting .....................................................................117
Regulatory Notices ................................................................127
Service Agreements ........................................................................................................ 127
Limitations of Liability ...................................................................................................... 127
Safety Instructions ............................................................................................................ 127
Appendix A - Time Zones ......................................................129
Index ......................................................................................131