I have a program for telephone charging. This program is developed with Visual Foxpro 6. I use MS ActiveX Communication Control to communicate with the PABX, and this program is OK for many PABX, such as NEC, Simense etc. But it failed when I tried to communicate with Ericsson PABX(md110 format). I tried in the Hyper Terminal, the communication is OK. Does anybody have any suggestions to help me?