- 28 -4) Startup VLAN, if set Voice/Data VLAN differentiated as data untaged, then the packet of thesignal/voice will use the Voice VLAN ID as the tag, but the data packets will not take theVLAN tag.5) If Disable the VLAN, regardless to set the Voice/Data VLAN differentiated or not, allpackets will not take the VLAN tag; If enable the DiffServ, all packets will only take theDiffServ value.6) One must to notice, enable the VLAN ID Check Enable that is default, If enable it, the phonewill match the VLAN ID strictly. When others' VLAN ID dismatch with us, the packets willdiscard. Contrarily, the phone will accept the packets with the distinct VLAN ID.7) You must gain the IP with the Static mode when you set VLAN, otherwise can't gain the IPin the VLAN and also can not dial with point to point.4.3.2.4. Service PortYou can set the port of telnet/HTTP/RTP by this page.SERVICE PORTField name explanationHTTP Portset web browse port, the default is 80 port,if you want to enhancesystem safety,you'd better change it into non-80 standard port;Example: The IP address is 192.168.1.70. and the port value is8090, the accessing address is http://192.168.1.70:8090Telnet Port Set Telnet Port, the default is 23. You can change the value intoothers.Example:The IP address is 192.168.1.70. the telnet port value is 8023, theaccessing address is telnet 192.168.1.70 8023RTP Initial Port Set the RTP Initial Port. It is dynamic allocation.RTP Port Quantity Set the maximum quantity of RTP Port, the default is 200.Notice:1)You need save the configuration and reboot the phone after set this page.2)If you modify the port of Telnet and HTTP, you would better set the value more than 1024because the port value less than 1024 is system port reserved.3)if you set 0 for the HTTP port, it will disable HTTP service.