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Mastering FreeSWITCH

You're reading from  Mastering FreeSWITCH

Product type Book
Published in Jul 2016
Publisher Packt
ISBN-13 9781784398880
Pages 300 pages
Edition 1st Edition
Languages
Concepts
Authors (8):
Russell Treleaven Russell Treleaven
Profile icon Russell Treleaven
Seven Du Seven Du
Profile icon Seven Du
Darren Schreiber Darren Schreiber
Profile icon Darren Schreiber
Ken Rice Ken Rice
Profile icon Ken Rice
Mike Jerris Mike Jerris
Profile icon Mike Jerris
Kalyani Kulkarni Kalyani Kulkarni
Profile icon Kalyani Kulkarni
Florent Krieg Florent Krieg
Profile icon Florent Krieg
Charles Bujold Charles Bujold
Profile icon Charles Bujold
View More author details
Toc

Table of Contents (21) Chapters close

Mastering FreeSWITCH
Credits
About the Authors
About the Reviewers
Contributors
www.PacktPub.com
Preface
1. Typical Voice Uses for FreeSWITCH 2. Deploying FreeSWITCH 3. ITSP and Voice Codecs Optimization 4. VoIP Security 5. Audio File and Streaming Formats, Music on Hold, Recording Calls 6. PSTN and TDM 7. WebRTC and Mod_Verto 8. Audio and Video Conferencing 9. Faxing and T38 10. Advanced IVR with Lua 11. Write Your FreeSWITCH Module in C 12. Tracing and Debugging VoIP 13. Homer, Monitoring and Troubleshooting Your Communication Platform Index

Debugging


Things always go wrong. With so many moving parts and different complex protocols and configurations it's expected mistakes will be made at some point. You may provide invalid configuration, the software may have a bug, the remote equipment may be misbehaving, and so on. You need to be prepared to deal with all those problems. Debugging a problem is often a matter of working your way up, verifying that each hardware or software layer is working as expected, until you find the layer that is not doing its job. The first layer to check is the physical layer. For T1/E1 lines, verify there are no alarms and the port is in the Connected status (for Sangoma cards) or OK for DAHDI (use the DAHDI tool application).

Checking the physical layer

Run the following command:

# wanpipemon -iw1g1 -c Ta

This command will check physical alarms on span number 1 (you can just increase the first number for span 2, for example, w2g1).

This very detailed output shows alarms in the framer (the hardware responsible...

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