On 01/11/2012 01:25 PM, Jayesh Labade wrote: > Can we do subscriber to subscriber calling in sipwise? Yes. > Also I am not able to add *SIP URI* for subscriber in pure numeric > format. eg. 1001. You should open /etc/ngcp-config/config.yml, find the option allow_numeric_usernames, change it to 1, save and execute ngcpcfg apply.