Telephone Cable Splitter Cablemodem To Telephone Line Via Splitter?

Cablemodem to telephone line via splitter? - telephone cable splitter

Now that I use. ADSL2 + Modem 220BX or smart BeeTel 882 Ax.
..... The set-up:
a. phone line -> input ->. --. B. Splitters> c.OUTPUT to Phone
D. ....&..---> ADSL -> RJ45 for PC
-> USB (Firewire) to PC
No problem.
To Dos:
Can I change the modem cable to the input (d) above?
(You can find telephone-modem connection cable) Change type.
When the input signal is for DSL and cable?
Will it work?