Tuesday | 20 August 2019

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WireShark SIP Trunk Analysis

One day course

Agenda

1. Network considerations
2. Filters
3. SIP protocols
4. Media player
5. SIP Responses and Errors
6. Media Relay and ALGs

Objectives

On completion of the Wireshark Analysis course, the delegate will be able to:
identify network topology issues including bottlenecks, packet loss, delays and jitter
make recommendations on where to use packet or frame prioritisation
create .pcap files that are manageable and succinct
make corrections in programming

Hardware Required: Laptop (with USB capabilities and Ethernet card),with Wireshark loaded and tested.

Scenarios covered include:

1) Topology analysis and where to connect at layer 1
2) Changing colours in the packet list pane to identify meaningful traffic quickly
3) Detection of layer 2 broadcasts (including ARP)
4) Capture filter and/or multiple capture filters
5) Common display filters
6) SIP trunk outbound call analysis (using both IP address resolution and user name/password)
7) SIP trunk inbound call analysis
8) Multiple simultaneous call analysis
9) Detecting and resolving common SIP error codes, 403, 404, 480, 503
10) Resolving issues using Call Flow
11) Detecting jitter, packet rate and out of order layer 3 IP packet sequencing
12) RTP playback
13) Saving meaningful and condensed traces to forward on for escalation
14) How a MRS can be used to overcome firewall issues
15) How ALGs can be used to manipulate SDP signalling to overcome SIP trunk provider issues

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