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Telecom e-Services
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DOT Mitra

A B C D E F G I K L M N O P Q R S T U V W
Service Tax
Service tax is a tax levied by the government on service providers on certain service transactions, but is actually borne by the customers. It is categorized under Indirect Tax and came into existence under the Finance Act, 1994
SSID

Service Set Identifier. the name of a wireless network that helps you connect your device to the right network.

SUC
Spectrum Usage Charges - In addition to License Fee, wireless service providers are required to pay Spectrum Usage Charges as a percentage of AGR.
Supplementary services
GSM offers three basic types of services: Telephony services or teleservices, Data services or bearer services & Supplementary services. Supplementary services are additional services that are provided in addition to teleservices and bearer services. These services include caller identification, call forwarding, call hold, call waiting, conferencing, number identification, closed user group and barring of outgoing (international) calls
TB
Trial Balance
TDSAT

Telecom Disputes Settlement and Appellate Tribunal. TDSAT is a tribunal that adjudicates disputes and appeals in the telecom sector in India

TDSAT
Telecom Disputes Settlement and Appellate Tribunal
Telemarketer

Registered Telemarketer means any Sender of commercial communication who is registered for the purpose of telemarketing with the access provider(s).

Telemarketer Codes

Allocation of access codes (prefixed numbering series) to Telemarketer for dialing out as its allicated code

Terminal equipment
A device that constitutes a point of termination of a communications circuit or channel.Terminal equipment includes all customer premises equipment (CPE), including voice terminal equipment and data terminal equipment (DTE)
TRAI
Telecom Regulatory Authority of India
TSP
Telecom Service Providers (TSPs) 
TSTP

Test Schedule Test Procedure (TSTP) for Roll Out Obligation

UASL
Unified Access Services License - The UASL services cover collection, carriage, transmission and delivery of voice and/or non-voice messages over licensee’s network in the designated service area and include provision of all types of access services. Access Service Provider can also provide Internet Telephony, Internet Services and Broadband Services. If required, access service provider can use the network of NLD/ILD service licensee.The access service includes but not limited to wireline and / or wireless and fixed wireless access.
UL
Unified License - The Licensee may establish, operate and maintain Telecommunication Networks and telecommunication services using any technology as per prescribed standards in the service area as per scope of services authorized under this License. In case, the Licensee obtains Access Spectrum, the terms and conditions of the allotment of spectrum regarding use of technology shall be applicable.
UL License
Unified License (UL)
UL-VNO
Unified License for Network Operator (UL-VNO)
UMS services

Unified Media Services

USO
Universal Service Obligation - NTP’99 provided that the resources for meeting the USO would be raised through a ‘Universal Access Levy (UAL)’, which would be a percentage of the revenue earned by the operators under various licenses.
USR

UHF Handheld Radio (USR) and License is issued by RLOs

UTM

Unregistered Telemarketer" (UTM) means any Sender of commercial communication who is not registered for the purpose of telemarketing with the access provider(s)

Value added services
Value-added service (VAS) is a popular telecommunications industry term for non-core services, or in short, all services beyond standard voice calls and fax transmissions. In the telecommunication industry, on a conceptual level, valueadded services add value to the standard service
VAS
Testing of Value Added Services (VAS)
VNO
Virtual Network Operator
VSAT
Very Small Aperture Terminal - VSAT License is to establish, install, operate and maintain VSAT Closed Users Group Domestic Data Network service via INSAT Satellite System on non- exclusive basis within territorial boundary of
VSAT-CUG
VSAT CUG Service (Satellite based)
WANI
Wi-Fi Access Network Interface
WEP

WEP (Wired Equivalent Privacy) was first security solutions for WLANs that employed encryption

WFD
Wireless Finance Division of DoT
WHO
World Health Organisation