I have currently Ip phones 1120E and 1140E phones on my network and PBX. When people phone out they can hear the person on the other side but the person cannot hear them. I established that it is the MC-32 cards that is giving the problems. I just need to know what version firmware is the latest one and where can I download it and any other ideas of fixing it. Running at the moment cs1000 ver4.5. Only outside calls internally it is working fine.