How does voipmonitor scale?
Read this: Scaling
How to clean old data and database?
Read this: Data Cleaning
What is the red small icon in CDR?
How to interpret two charts in the cdr detail?
See this: Graph cheat sheet
What architectures are tested?
x86 32 and 64, ARMv5 - (if you have error with missing "__sync_fetch_and_sub_8" you have to upgrade GCC compiler to version 4.8)
Why I do not see sip packets other then port 5060?
Voipmonitor sniffer by default sniffs packets only on port 5060 from or to. If you need to sniff more SIP ports you need to specify it in configuration. Please see this: Sniffer_configuration#sipport
How to disable timezone check
Go to settings -> System configuration -> Advanced section -> Hide timezone information -> Enable and set to TRUE
How to know how many license channels do we need?
You can have unlimited number of phones / endpoints but you need to buy channels according to your maximum number of calls at the same time during peak.
Go to GUI -> Tools -> concurrent calls which will show peaks past 14 days. All multiple legs are already aggregated into single channel so you do not need to buy extra channels in case you have two or more CDR per one real call. The intention is to scale pricing based on real concurrent calls not accounting multiple legs of the same calls.
How does having multiple sensors affect the licensing? If I add a 2-3 remote sensors to the system, would they use the same license pool?
Central GUI calculates connected channels for the whole database but groups all calls legs as a single call so multiple legs are not counted twice etc.
accident / unwanted spikes
If your license is blocked due to high spike (accident / hack whatever) you need to delete those CDR from database via the GUI (filter those calls and in toolbar use delete buttons) and then try to unblock the license. If you do not want to delete them and you will have higher channels than your license for two consecutive days your license will be blocked after 14 days - you need to upgrade to higher channels license which you can do on voipmonitor.org portal.
You can enable DTMF RFC2833 or DTMF SIP INFO in voipmonitor.conf by enabling:
dtmf2db = yes
You can also enable DTMF inband detection (only for G.711) by enabling (it will take some CPU)
inbanddtmf = yes
Bulk download of pcaps or audio (wav/ogg)
GeoIP location services
Read this: order of GeoIP processing
Self signed certificate
Corrupted GUI installation, how to reinstall the GUI
Read this: Re-install_the_GUI