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.