ITU-T V.92

V.92 is an ITU-T recommendation, titled Enhancements to Recommendation V.90, that establishes a modem standard allowing near 56 kb/s download and 48 kb/s upload rates.

The recommendation was issued in November 2000, with amendments in July 2001 and March 2002.

Quick connect works by training the client modem on the first call; analog and digital characteristics are stored in a local profile and then retrieved for future connections.

Pulse-code modulation (or PCM) allows higher rate digital transmissions over the analog phone lines.

PCM upstream provides a digital connection for upstream data, reducing latency and allowing for a maximum upload speed of 48 kbit/s.