Further information:
The Panasonic KX-TD1232 Telephone System is supplied with 0 lines, and 16 extensions. It can be expanded to a maximum of 12 lines, 32 extensions. Expand up to 64 extensions using XDP. Connecting an ISDN30 module gives you 30 channels of Primary Rate ISDN30, in addition 8ccts of analogue lines or 8 channels of ISDN2. Total line capacity is 38.