Specifications

Traffic Channels
Radio Frequency Channel Types
August 08, 2000 68P81095E55-E B-7
Temporary Control Channel
The Temporary Control Channel is used in mobility management and the
interconnect handover process. This channel is used as required to transfer
information concerning dynamic frequency allocation and EBTS service parameters.
This information is summarized in Table B-5.
Table B-5 Temporary Control Channel Contents
Dedicated Control Channel
The Dedicated Control Channel is used to maintain constant control contact with the
mobile. Parameters passed on this channel are summarized in Table B-6.
Table B-6 Dedicated Control Channel Contents
Traffic Channels
Traffic Channel
The Traffic Channel is used to transfer voice and data between the MS and the
EBTS. The Traffic Channel (TCH) is used in both dispatch and interconnect call
processing. Voice is carried on the TCH in VSELP compressed. VSELP data and
error correction do not require the entire timeslot (Figure B-4). This allows control
data to be sent on the TCH as required (Associated Control Channel). The contents
of the TCH are summarized in Table B-7.
Table B-7 Traffic Channel Contents
Channel Contents
Inbound (downlink) Channel reassignment requests
handover and assignment confirmation
Outbound (uplink) Handover identification
Handover confirmation
Channel Contents
Inbound (downlink) Extended call control
Location updates
Authentication
MS acknowledge
Outbound (uplink) Extended call control
Authentication
SMS data
Channel Contents
Inbound (downlink) Compressed voice packets
Data packets
Outbound (uplink) Compressed voice packets
Data packets