For now on,
There are some concern,
1. If the firmware of the IP phone is upgraded, is it necessary to have certain update to the PBX controller?
2. Since our company is using both 5212 and 5312 IP phones, I am not sure if the 5212 phone would cause other problems if the PBX system need to upgrade.
3. Is that work fine with my existing PBX System if the IP phone is upgraded through another PBX.
Does anyone tried the above case before
?