Identification of chosen keyword.

Definition (in your own words) of the chosen keyword.

List any sites, books, or sources utilized when researching information on this topic. (Remove any filler text).

• Reference 1
• Reference 2
• Reference 3

asterisk

A programming language to communicate and execute the basic functions of telephony services.

'extensions.conf' located in '/etc/asterisk/extensions.conf' maintains a bulk of the configurations options for the asterisk service including your dial plan and how inbound/outbound calls are routed. Example of an extension:

exten => 602,1,Dial(SIP/Andrew,20)
exten => 602,n,VoiceMail(602@vm,u)

'sip.conf' located in '/etc/asterisk/sip.conf' maintains the users locations and affiliation to the asterisk server. Example of a sip.conf user entry:

[Andrew]
type=friend
secret=123456
host=dynamic
context=users
deny=0.0.0.0/0
permit=10.80.2.0/255.255.255.0
mailbox=778@vm