[Asterisk-Users] Channel Bank?

[Robert Hajime Lanning]

<quote who="Ken">
> Hello, I'm new to Asterisk and would like to know how you could have 4
> to 6 incoming analog POTS lines connecting to the Asterisk server and
> have 4 to 6 analog lines going out.(A T1 line is too costly). Would 2
> channel banks be used?

A T1 channelbank has 24 channels, so only 1 is needed.

FXO channels (What you connect to the POTS lines) can be both inbound and
outbound.  If you are not using DID.  So, you just need to find out how many
concurrent calls you need to support.

If you are using analog DID lines, then those are inbound only, and require
FXS ports.  (You supply dialtone and battery, the carrier's switch picks up
your line and dials into your PBX.)

Now, there are multiple ways to get the analog lines into Asterisk...
   o use an external gateway...  POTS <-> SIP <-> Asterisk
   o wait until next month and get the FXO multiport cards from Digium
   o get a T1 card + channelbank

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       -MCP