Common body of support emails

HW sizing

1000 channels

CPU E5-2620-v4 will be sufficient:
expecting 4(7) cores used for sniffer, 4(9) for db+web server. (with HT enabled)

RAM 32GB
expecting 4GB for sniffer, 4GB for webserver, rest for db+OS

Storage for full packet records (HDD Disk with 7k+rot/min): (1MB = 1minute for 2 streams in g711) If you have 2 legs then for 14 days of full recording:
Real usage can be different - but this is how we can estimate very aproximately:

1MB x (60min x 24hour x 14days) x 2 (legs count) x 1000(count of max sim calls) x 1/3 (33% Ratio - expectation of daily minutes in compare to peak time) = 13TB. 

Storage for DB SSD: This mainly depends in average CPS (calls per second) which differs in each installation.
You can count aproximately 2KB/CDR(call) with compression enabled.

For example:
If we count 200 000 calls per day (connected also refused), then aprox usage per day is 500MB - keeping CDRs for 1 month results in aprox 15GB for one year aprox 200GB. (not including registrations or 
options/subscribe/notify) requests.

Install & configure client/server in packetmirror mode

Hello,

install just the sniffer service there on pbx where you want to collect information:
https://www.voipmonitor.org/doc/Sniffer_installation#Step_by_step_for_64bit_linux_procedure

then edit /etc/voipmonitor.conf and take care on common setting options like:
```
spooldir - where health information (rrds) will be stored
max_buffer_mem - maximum allowed RAM allocation for packet buffers (before send to central when network is slow it can queue the pacckets into RAM)
interface - which INTERFACE(s) to sniff on.
sipport - which TCP packets will be also sent for analyze (all UDP packets are re-sent)
ringbuffer - allocated ram for ringbuffer (packets queue between driver and kernel)
```

Then define also client/server specific options for client side:
```
# this example configuration will process packets and sends only CDR to the server.
# id_Sensor needs to be < 65536
id_sensor = unique_number 
server_destination = serverip
#needs to be defined same as server_bind_port option on the central server 
server_destination_port = 60024
server_password = somepassword
packetbuffer_sender = yes
```
https://www.voipmonitor.org/doc/Sniffing_modes#client.28remote.29_sensor_configuration
 

Then on dedicated voipmonitor server install whole voipmonitor system (sniffer+GUI+DB) using installation instructions:
Use any LTS distrubution we tested:
http://www.voipmonitor.org/doc/Content

then set common options like you did on client + maxpoolsize option that tells the maximum size of a packet captures in a spooldir, and plus cleandatabase option that will tell for how long will be CDRs 
kept in memory
https://www.voipmonitor.org/doc/Data_Cleaning

When used for production (collecting lot of data) make sure to correctly set database for best performance (also keep in mind that maxpoolsize option not includes size of db /var/lib/mysql that will grow 
with count of CDRs stored inside.
https://www.voipmonitor.org/doc/Scaling#MySQL_performance

Also set the server side options in a server:
https://www.voipmonitor.org/doc/Sniffing_modes#server.28central.29_sensor_configuration

after above set restart voipmonitor service on the server (check /var/log/syslog or /var/log/messages if it periodicaly print its state, or some errors appeared at startup)
then start service on client side and check syslog / messages there. 

If client can connect to master server you will see in browser after login to GUI in settings->sensors that the client with its id_sensor were autoadded into list of sensors.