I have applied for subscription to the VOIP services of my telephone and ADSL provider (same company). The provider will supply me with a new telephone number, allowing me local calls and emergency numbers. I keep the old number. They present various setups for VOIP telephony, the simplest one being, for hardware, headset+PC+ADSL"modem" , the modem being connected to the phone wall socket. For Internet access, I have replaced the “modem” with a Linksys wi-fi adsl gateway.
My question is: with such an installation as described above, do I need an analog interface card such as TDM800P, or do I consider that I need not connect to the PSTN any longer? In the 2nd case, am I right to hope that with the adequate config of Asterisk, I will be able to implement features such as Follow-me or Call-back?
Thanks for your answers.