User Guide for the SIP-T54S media IP Phone 
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Configuring the Intercom Feature on the IP Phone.......................................................................... 184 
Using Intercom ................................................................................................................................................ 186 
Multicast Paging .................................................................................................................................................. 187 
Sending RTP Stream ...................................................................................................................................... 187 
Receiving RTP Stream ................................................................................................................................... 191 
Using Multicast Paging ................................................................................................................................. 192 
Music on Hold ...................................................................................................................................................... 193 
Automatic Call Distribution (ACD) ............................................................................................................... 194 
Shared Call Appearance (SCA) ....................................................................................................................... 196 
Configuring SCA Feature on the IP Phone ........................................................................................... 197 
Using SCA Feature on the IP Phone ........................................................................................................ 203 
Bridged Lines Appearance (BLA) ................................................................................................................... 210 
Configuring BLA Feature on the IP Phone ............................................................................................ 211 
Using BLA Feature on the IP Phone......................................................................................................... 213 
Messages ................................................................................................................................................................ 215 
Short Message Service (SMS)..................................................................................................................... 215 
Voice Mail .......................................................................................................................................................... 218 
Message Waiting Indicator (MWI) ........................................................................................................... 219 
Regulatory Notices .................................................................... 223 
Service Agreements ........................................................................................................................................... 223 
Limitations of Liability ....................................................................................................................................... 223 
Safety Instructions .............................................................................................................................................. 223 
Appendix..................................................................................... 225 
Appendix A – Time Zones ................................................................................................................................ 225 
Appendix B – Menu Structure ........................................................................................................................ 227 
Index ........................................................................................... 229