The phone line is for onscreen Caller-ID, impulse Pay-Per-View and DISH Network Home Interactive TV.

There is also a special consideration in regards to their promotion, where there is no additional outlet fees provided all dual-tuner receivers (DISH 322 or DVR 522) are continuously connected to the phone line.

btw, you can receive a HDTV compatible receiver now - the new DISH 811 HD is now available!