[asterisk-users] A question about Caller ID

[Terry Brummell]

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Christian
Sent: Sunday, June 12, 2011 1:51 PM
To: asterisk-users at lists.digium.com
Subject: Re: [asterisk-users] A question about Caller ID

Hi,
over anlog lines.
Many thanks,
Christian




Bell 202 modulation between the first and second rings...

Read the "operation" section from the following link.
http://en.wikipedia.org/wiki/Caller_id