i have 2 IP Phones 7910 and 7912 which use the same direct line (exp: 021657689 )for calling and receiving calls but with different extension :
7910 --> extension= 796
7912 --> extension= 667
i want to configure receiving calls in first time in cisco 7910, and after 3 rings the call will be forwarded to cisco 7912, don`t forget that they are using the same direct line
where i must exactly configure this option in Phone Configuration page ?? or directory Number Configuration page ??
Any help will be appreciated