TD 92685EN
28 June 2012 / Ver. A
Troubleshooting Guide
Ascom i62 VoWiFi Handset
59
7. VoWiFi Handset
14 The packet containing the response to the Ping.
15 Confirmation that the handset remains in PS mode
16 Confirmation that the packet is an uplink packet
17 Verification that the packet is queued in the corr
ect category, UP
0 - Best Effort.
The fifth and final packet illustrated in figure 23 is a QoS Null data frame that indicates that
there are no buffered packets of any access category currently i
n the AP. The following
information is shown in figure 23:
Figure 23. QoS Null Data Frame
18 The QoS Null data frame
19 Confirmation that the packet is a download packet
20
Informs the handset that no more packets are buffer
ed. This packet marks the end of
the unscheduled service period.
When the handset receives a packet that marks the end
of the unscheduled service period, it
shuts down the radio receiver and enters idle mode until the next uplink voice packet is
transmitted 20 ms later.
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