When this post was made box was running asterisk 11 pbx 12
The reason why i thought it was not available in this version was because
in advanced settings i noticed SIP Channel Driver
was not set to default that should be Value=both. (chan_sip and PJsip)
I tried to revert to default saves changes but then reverts it self back telling me
I may not be an option available.
Please dont confuse this with my last post today Where i recently installed asterisk 13. in the last 24 hours
Would you navigate to that thread and advise?