InterLinked: started list of USOCs page

2022-09-07T18:38:06Z

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A '''universal service order code''', more commonly known in the industry as a '''USOC''', is an identifying code used in telephony, such as for telephone equipment and calling features. USOCs were introduced by the Bell System in the 1970s<ref>{{cite web |url=http://cpcstech.com/usoc-universal-service-ordering-code-information.htm |title=Universal Service Ordering Code}}</ref>) as a standardized way of referring to service information within (and often between) telephone companies. While many of the most common USOCs are well-standardized and have a ubiquitous meaning, some USOCs have been introduced and are used regionally or locally by specific providers, such that the same feature may go by different USOCs between multiple companies.

== List of service USOCs ==

{| class="wikitable sortable"
|-
! USOC !! Feature Name
|-
| 1FR || 1-party flat-rate residential service<ref>{{cite web |url=https://www.carrierbid.com/usocs/ |title=USOCs: the Language of the Phone Company}}</ref>
|-
| 1FB || 1-party flat-rate business service
|-
| 1MR || 1-party measured rate residential service
|-
| 1MB || 1-party measured rate business service
|-
| 2FR || 2-party flat-rate residential service
|-
|}

== List of common feature USOCs ==

{| class="wikitable sortable"
|-
! USOC !! Feature Name
|-
| CPU || Call Pickup
|-
| EAB || Call Hold
|-
| ESC || Three-Way Calling
|-
| ESM || Call Forwarding (Variable)
|-
| ESX || Call Waiting (Terminating)
|-
| EVB || Call Forwarding Busy
|-
| EVD || Call Forwarding Don't Answer
|-
| HMI || Home Intercom
|-
| LNQ || Last Number Redial
|-
| NNK|| Caller ID Deluxe (Name and Number)
|-
| NSD|| Caller ID Basic (Number)
|-
|}

== References ==
<references />

List of USOCs - Revision history

InterLinked: started list of USOCs page