# sudo apt-get install tftpd-hpa
# apt-get install dhcp3-server
# /etc/init.d/dhcp3-server restart # /etc/init.d/tftpd-hpa restar
make sure you write the correct firmware filename in<loadInformation>SIP42.8-5-3S</loadInformation>2) Download SEP<MAC_Address>.cnf.xml from below web links and put it in firmware directory. You must put the MAC address of each phone in the file (eg.SEP24B657B1DED4.cnf.xml). Note that for every phone you need one file with the MAC address of the phone. 3) Download the file dialplan.xml and copy it into the firmware directory.
<DIALTEMPLATE> <TEMPLATE MATCH="*" Timeout="5"/> <!-- Anything else --> </DIALTEMPLATE>