In telnet

Type o 192.168.1.254

Connected to speedtouch

Escape character is ‘^]’.

Username : Administrator

Password : ********

———-…

… welcome message trimmed

Type menu

look for connection>unbind> application

application=choose sip (press enter key to bring choices up)

port= enter 5060 press enter then choose OK

viaTurning off SIP ALG on Thomson Router | Community Site.