TD 92685EN
28 June 2012 / Ver. A
Troubleshooting Guide
Ascom i62 VoWiFi Handset
5
1. Introduction
1.6 Information Required by TAC
If an issue remains unresolved and a request needs to be opened with the Technical
Assistance Centre (TAC) team, the following information should be forwarded:
• A detailed description of the problem and what tests have been p
erformed. Trace files
should be attached and appended with descriptions of the tests and the MAC and IP
addresses of the equipment used in the tests, for example, the handset, proxy and WLAN
information.
• The values of parameters that have been configured, s
uch as SSID, security setting and
DTIM values.
• The frequency of the occurrence of the erro
r and information about how to reproduce
the error, if possible.
• The WLAN hardware and software versions of bot
h the controller and APs.
• SIP proxy hardware and software.
• The handset software version.
SSID Service Set Identifier.
TAC Technical Assistance Centre
TCP Transmission Control Protocol
TFTP Trivial File Transfer Protocol (TFTP)
TIM Traffic Indication Map
TSpec Traffic Specification
TU Time Unit
U-APSD Unscheduled Automatic Power Save Delivery. Also referred to
as WMM-PS.
UDP User Datagram Protocol
Unite Name of Ascom IP based protocol for handling, events,
m
essages and alarms.
UP 6 User Priority (value between 0-7). Wi
reless QoS at the MAC
Layer.
URI Uniform Resource Identifier
VoIP Voice over IP.
VoWiFi Voice over WiFi. Refers to a system
running VoIP over WLAN.
WPA/WPA2 WiFi Protected Access 2.
WEP Wired Equivalent Privacy.
WiFi A Wireless Local Area Network based on the IEEE 802.11
stan
dard.
WLAN Wireless Local Area Network.
WMM WiFi Multimedia.
WMM-PS WMM Power Save. Also referred to
as U-APSD.
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