Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones582Details of Configuration Parameter:Parameter Permitted Values Defaultfeatures.text_message.enable 0 or 1 1Description:Enables or disables the IP phone to send or receive text message(s).0-Disabled1-EnabledWeb User Interface:NonePhone User Interface:NoneMulticast PagingMulticast paging allows IP phones to send/receive Real-time Transport Protocol (RTP) streamsto/from the pre-configured multicast address(es) without involving SIP signaling. Up to 10listening multicast addresses can be specified on the IP phone.Sending RTP StreamUsers can send an RTP stream without involving SIP signaling by pressing a configured multicastpaging key or a paging list key. A multicast address (IP: Port) should be assigned to the multicastpaging key, which is defined to transmit RTP stream to a group of designated IP phones. Whenthe IP phone sends the RTP stream to a pre-configured multicast address, each IP phonepreconfigured to listen to the multicast address can receive the RTP stream. When the originatorstops sending the RTP stream, the subscribers stop receiving it.ProcedureConfiguration changes can be performed using the configuration files or locally.Configuration File .cfgSpecify a multicast codec for the IPphone to send the RTP stream.Parameter:multicast.codecConfigure the multicast IP address andport number for a paging list key.Parameter:
