Tips & Experiences 08/04/2026

15 virtual call center terms that turn you into an expert

Virtual call centers are a growing trend that many businesses are gradually adopting. However, some of the terminology can be confusing for business owners encountering it for the first time. OMICall will explain and introduce some common terms to help you become an expert in the virtual call center industry.

15 Virtual Call Center Terms That Turn You Into an Expert

What is a Virtual Call Center?

A virtual call center, also known as a cloud call center, is a telephone system built and operated on cloud technology combined with VoIP (Voice over Internet Protocol). Call center services are delivered via the internet instead of traditional phone lines used by conventional systems.

You can learn more about virtual call centers in the article: What is a Virtual Call Center? Cloud Call Center Applications for Businesses

Common Terms Used in Virtual Call Centers

Virtual Call Center Terminology

VoIP
VoIP (Voice over Internet Protocol) is a technology that enables voice transmission over the internet. Human speech is transmitted through computer networks using the TCP/IP protocol. This technology is based on packet switching, replacing the traditional circuit-switched voice transmission.

IP Phone
An IP Phone is a device similar in design to a traditional desk phone. However, it connects and operates via the internet and offers many advanced features such as caller ID display, missed call logs, call recording, and call forwarding when no one is available to answer.

PBX
PBX (Private Branch Exchange) is an internal business telephone system that allows departments and employees to make free internal calls. This feature makes virtual call centers an excellent solution for reducing telecommunication costs.

ACS
ACS (Automated Call System/Service), also known as Auto Call, is an automated calling solution. It allows multiple calls to be made simultaneously and instantly. Businesses can design professional call scripts to optimize performance and efficiency.

Softphone
A Softphone is an application installed on smartphones or computers to support business communication needs. There are two main types: one uses third-party applications configured by the provider, and the other is a custom-built softphone developed by the service provider under their own brand.

Extension
An Extension is an internal number within a company’s call center system. Businesses can set up multiple extensions (e.g., 5, 10, or more) depending on their size and needs.

Agent, CRS
While “agent” typically means a representative externally, in a virtual call center it refers to a call center operator. These are the employees responsible for answering calls, communicating with customers, and providing information about products or services.

Recording
Call recording is a built-in feature of virtual call centers. It helps businesses monitor service quality by reviewing interactions between agents and customers, enabling better business strategy adjustments.

API
API (Application Programming Interface) is a method that allows systems to connect with libraries, applications, or business software such as CRM/ERP. APIs enable access to functions and facilitate data exchange between systems.

IVR
IVR (Interactive Voice Response) is an automated interaction system. When a customer calls, the system plays a pre-recorded message and guides them to press numbers (1, 2, 3, etc.) to reach the appropriate service.

Import/Export
Virtual call centers allow users to easily import or export data such as reports and statistics. Data is typically exported in Excel format to support tracking, processing, and storage.

Transfer Call
Call transfer refers to routing calls either manually or automatically. Manual transfer is performed directly by staff, while automatic transfer follows pre-set rules (e.g., busy line, unavailable agent, or no response).

Popup
Popup is a feature that displays customer information when an incoming call is received. This feature is especially effective when integrated with CRM or third-party software.

Voicemail
Voicemail acts as an automated answering system. When agents are unavailable, it plays a message and allows callers to leave a message or request a callback. This helps ensure a smooth customer service process.

Ticket
A Ticket is a record used to create and manage tasks or requests. It helps businesses track performance, monitor progress, and ensure that no tasks are overlooked.

These are the essential virtual call center terms that can help you become an expert and fully utilize cloud call center features.

OMICall Virtual Call Center services aim to provide the best solutions for businesses—helping reduce costs while delivering outstanding efficiency.

Please contact us today to learn more about our virtual call center services.

CÔNG TY TNHH CÔNG NGHỆ VIHAT (VIHAT TECHNOLOGY Co.,LTD)

Trụ sở: Tòa nhà ViHAT – 06 đường số 16 (KDC Himlam) – P.Hiệp Bình Chánh – Q.Thủ Đức – TP.HCM

Chi Nhánh Hà Nội Tầng 15, Tòa Nhà LADECO, 266 Đội Cấn, Ba Đình, Hà Nội

Chi Nhánh Cambodia Thida Rath #154 St.33MC , Sangkat Steung Meanchey, Khan Mean Chey Phnom Penh

Author admin