Implementations

This page shows some ways how MOR billing system can be used. Examples are from real implementations.

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2 server redundant solution

This is most popular solution because it is fully redundant and most stable.

2 server redundant solution

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3 server redundant solution

• By default calls go to first Asterisk server
• If first Asterisk server fails, DNS SRV points to second Asterisk server
• If database server fails, second Asterisk server is still functional and can serve calls

• How it will work with DNS?
  • Traffic should come to some URL, which is configured using DNS SRV, e.g. it should route calls from URL to first server IP, if this IP is not available - then this URL points to second server IP
• Do we need separate DNS server?
  • It is not necessary, DNS SRV can be configured on your Internet providers' DNS server.
• What hardware is recommended for each server?
  • Main Asterisk server should have powerful CPU (Dual/Quad Xeon) and at least 2GB RAM
  • DB/GUI server should have FAST HDD and 2-4Gb RAM. CPU is not so important here
  • Asterisk/DB server can be not so powerful as other two
• How many network cards are necessary for each server?
  • They can work with one card, but better to have 2 cards for each server and interconnect servers on dedicated LAN

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4 server solution in Italy with 16 E1

• Such system is in Italy serving Call Shops
• E1 hardware is 2 x Sangoma A108DE cards
• This implementation is used for high volume calls to/from PSTN network over 16 E1 links were 4+4 E1 is for incoming and 4+4 E1 is for outgoing (on Asterisk 1 server 4 incoming/4 outgoing and same on server Asterisk 2).
• Separate server is dedicated to database which minimizes load on Asterisk servers.
• GUI is on separate server with it's own DB connected to main DB server over MySQL Replication.

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Many Asterisk servers with DB Replication