Agilent Technologies 8960 10 Series Reference Manual page 522

Configuring the Traffic Channel (TCH)
Max Frames Allowed for Assignment
OUTPUT 714;"CALL:COUNT:TDMA:FRAMES 2O"
would set the maximum number of frames allowed during channel assignments to 20 frames. See
"CALL:COUNt:TDMA:FRAMes" on page
Channel Mode
OUTPUT 714;"CALL:TCH:CMOD EFRS"
would set the channel mode of the mobile station to enhanced full rate speech. See
"CALL:TCHannel:CMODe" on page
Operating Considerations
When configuring the base station emulator (BSE) you must configure the broadcast channel (see
"CALL:BCHannel" on page
and the TCH that can be configured; however, the test set's default parameters should allow a properly
functioning mobile station to successfully camp on the cell and make a call under most circumstances.
When Operating Mode = Active Cell, if a call is connected, changes to the traffic channel number (ARFCN) or
traffic channel timeslot, including a change to the value of the parameter's current setting, causes
signaling on the downlink FACCH to initiate a channel reassignment, see
Handover" on page 119. This configures the TCH to use the new parameter. If a call is not connected, changes
to the parameter are stored for when the next call is established
When Operating Mode = "Test Mode", if Test Mode Downlink Function (see
page 249) = "BCH+TCH", changes to the traffic channel number (ARFCN) or traffic channel timeslot will
reconfigure the downlink TCH accordingly, but there will be no signaling initiated. The change will be
immediate. If a TCH is not being generated, changes to the parameter are stored for when the next call is
established
Downlink speech controls what kind of speech data is transmitted on the downlink TCH. A TCH with speech
data is generated when call control status is connected (see
35), or when in test mode with downlink function set to BCH+TCH.
When an FBER measurement is activated PRBS15 is transmitted on the downlink TCH, over riding the user
setting of downlink speech source. Any changes to downlink speech source will be accepted and saved but not
applied until FBER become inactive.
There are 5 different settings for the downlink speech source. See
page 290.
• Echo retransmits the uplink speech frames back to the downlink with a non-selectable delay of about 1
second.
• PRBS15 the 260 speech frame bits (prior to channel coding) are generated using a pseudo random bit
sequence.
• SIN300 the sequence of 260 speech bit frames represent a sine wave at 300 Hz.
• SIN1000 the sequence of 260 speech bit frames represent a sine wave at 1000 Hz.
522
S:\Hp8960\E1960A GSM Mobile Test Application\A.04 Release\Reference_Manual\Chapters\gen_bse_tch.fm
245.
290.
236) and the traffic channel (TCH). There are a number of parameters for the BCH
"Programming a Dualband
"CALL:FUNCtion:DOWNlink" on
"Call Processing State Synchronization" on page
"CALL:TCHannel:DOWNlink:SPEech" on