nowadays im facing issue which is i cant write command mode SRST under command voice register global on the H.323 Router to make it work as a Survivable Remote Site Telephony is this command need a license to be appeared or whats needed before that command please answer me ASAP,
By default under "voice register global" the mode running is SRST. When you access and request a change on the mode using command line, the system will allow you only two options: CME or ESRT. This because the SRST mode is already running.
This is the reason why whenever you change the mode to ESRST one and apply a "no mode esrst" it goes back to SRST mode which is the default one:
voice register global------------------------> mode is SRST by default unless you change it to cme.