[Asterisk-Users] Identify call router? How?

[Stephen Varga]

> 
> At the risk of sounding stupid..... what's CSU/DSU ? *i'm googling it
> right now, but it's nice to have convo on the list!*

A CSU/DSU is Channel Service Unit (CSU) this terminates T1 connections
from the phone company. This information is then passed to the Data
Service Unit which turns the signal into a serial data stream that
device like a router or computer can understand.


More detail definition of the terms
http://www.hyperdictionary.com/dictionary/Channel+Service+Unit
http://www.hyperdictionary.com/dictionary/Data+Service+Unit

HTH,
Steve