1x

This in the initial deployment for CDMA2000 involving a single carrier and
is typically referred to as CDMA2000 phase 1. The 1x system introduces the
use of packet data services for wireless operators. The 1x system utilizes a
SR1 and will transport both voice and packet data over the same physical
resources.
The data rates envisioned for 1x are listed in Table 13-4.