Glossary:

ATIS Telecom Glossary

Search Keyword By: U

Select a term name to open its entry and any media references. Longer definitions end with a “Read More” link.

UPSF

User Profile Server Function

upstream

1. The direction opposite the data flow.
2. With respect to the flow of data in a communications path: at a specified point, the direction toward which data are received earlier than at the specified point.

UPT

See Universal Personal Telecommunications service.

UPT access code

In universal personal telecommunications service, the code that UPT users may need to dial, when using some terminals and networks, to enter the UPT environment before executing any UPT procedures.

UPT access number (UPTAN)

A number dialed by a UPT user to contact the service provider when using certain terminals and networks. In order to achieve its purpose, the UPTAN must contain information that can be used (a) to route the call to the user's service provider and (b) to specify the service profile. The UPTAN should be an E.164 number. [After T
1.… (Read More →)

UPT database

In universal personal telecommunications service, a repository for information, such as a service profile, that is related to a set of UPT customers and UPT users.

UPT environment

In universal personal telecommunications service, the environment within which the UPT service facilities are offered, consisting of combinations of networks and UPT service control facilities that, when combined, enable UPT users to make use of telecommunication services offered by these networks.
Note: To the UPT user, the UPT environment appears as a single global network that provides personal mobility. However,… (Read More →)

UPT indicator

In universal personal telecommunications service, that portion (or portions) of the UPT number that identifies a call as a UPT call.

UPT number

In universal personal telecommunications service, the number that uniquely identifies a UPT user and that is used to place a call to, or to forward a call to, that user.
Note: A user may have multiple UPT numbers, e.g., a business UPT number for business calls and a private UPT number for private calls. In the case of multiple numbers,… (Read More →)

UPT routing address

In universal personal telecommunications service, the number used by the network to direct a call according to the user's UPT service profile.

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