TD 92685EN
28 June 2012 / Ver. A
Troubleshooting Guide
Ascom i62 VoWiFi Handset
4
1. Introduction
• An air trace tool or protocol analyzer such as Omnipeek or Wireshark for capturing traces
on the LAN and WLAN. These require a WLAN adapter and network card respectively.
• A spectrum analyzer for detecting non 802.11 RF interference.
1.4 Software Version
This guide refers to a handset running software version 3.4.x or later.
1.5 Abbreviations and Glossary
The following acronyms and terms are used throughout this guide:
AP Access Point.
B2BUA Back-to-Back User Agent
BSS Basic Service Set.
BSSID Basic Service Set Identifier.
CAC Call Admission Control
CCI Co Channel Interference
DFS Dynamic Frequency Selection
DHCP Dynamic Host Configuration Protocol.
DNS Domain Name Server.
DSCP Differentiated Services Code
Point. QoS on the Internet Layer.
Used both for WLANs and LANs.
DTIM Delivery Traffic Indication Message.
DTMF Dual-Tone Multi-Frequency
EDCA Enhanced Distributed Channel Access
ESS Extended Service Set.
ESSID Extended Service Set Identifier
IEEE Institute of Electrical and Electronics Engineers
IMS3 Integrated Message Server
ITU-T International Telecommunication Uni
on-Telecommunication
MAC Media Access Control.
PCAP Packet Capture
PDL Portable Device Logger. A troubleshooting tool.
PDM Portable Device Manager.
PSTN Public Switched Telephone Network
QoS Quality of Service.
RFC Request for Comments
RPCAP Remote Packet Capture
RSSI Received Signal Strength Indication.
RTP Real-time Transport Protocol
SIP Session Initiation Protocol
SNR Signal-to-noise ratio
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