=====datacomm Keyword 1=====
Identification of chosen keyword.

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

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

  * Reference 1
  * Reference 2
  * Reference 3



=====datacomm Keyword 1 Phase 2=====
asterisk

====Definition====
A programming language to communicate and execute the basic functions of telephony services.
====Demonstration====
'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:
<code>
exten => 602,1,Dial(SIP/Andrew,20)
exten => 602,n,VoiceMail(602@vm,u)
</code>
'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:
<code>
[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
</code>