I have a Vertex evx-R70 repeater, and I have programmed a Motorola DP4800 and DM4600, but the device has a problem when I send from the fixed device. The call appears on the mobile device, but without sound upon initial pressing of the PTT button. The sound was issued after two or more presses on the PTT button, and sometimes when we press the PTT button on the mobile device, it responded and the sound appeared. :
