What is a Call Center?
Call CenterA call center is a centralized operation where trained agents handle inbound or outbound voice calls on behalf of a business. Functions span customer service, technical support, telemarketing, collections, and lead generation. Modern call centers also blend voice with chat, email, and self-service automation to meet customers where they are.
Key takeaways A call center handles phone-led customer interactions, while a contact center adds chat, email, and social channels.
Global contact center spending is forecast to keep climbing as firms layer AI on top of human agents.
The Philippines and India remain the two largest outsourcing destinations, with Manila agents costing roughly 70% less than US equivalents.
Inbound, outbound, automated, and virtual are the four operating models you'll see most often.
Picking the right partner hinges on channel mix, agent quality, security posture, and pricing model — not headcount alone.Outsource Accelerator has tracked the call center sector since 2017, and the shape of the industry has shifted hard. Cloud platforms killed the on-premise PBX. Remote work normalized work-from-home agents, and generative AI now drafts agent responses in real time. The fundamentals still hold though — a voice on the line resolving a customer problem.
The call center label sticks even as the work expands. Most operations that still call themselves call centers actually run blended voice, chat, and email queues out of the same agent desktop. The phone is the anchor channel because it's the one customers reach for when they are frustrated, confused, or spending real money.
How it worksA call center routes incoming or outgoing voice traffic through a telephony platform — typically a cloud contact-center-as-a-service (CCaaS) stack — into a queue and on to an available agent. Workforce management software forecasts call volume. Automatic call distribution (ACD) matches callers to skill groups, and quality assurance teams score calls against rubrics for tone, accuracy, and compliance.
Three layers do the heavy lifting:
Layer
What it does
Typical tools Telephony / CCaaS
Routes calls, records audio, surfaces caller data
Genesys, Five9, NICE CXone, Amazon Connect Workforce management
Forecasts volume, schedules agents, tracks adherence
NICE WFM, Verint, Calabrio Analytics & QA
Scores calls, mines transcripts, flags coaching moments
CallMiner, Observe.AI, CrestaAccording to Gartner, the contact center market is one of the fastest-growing slices of enterprise software, driven mostly by AI augmentation rather than headcount growth. The agent isn't going away; the tooling around the agent is just getting smarter. Expect copilots that surface knowledge-base answers mid-call, real-time sentiment scoring, and auto-summarized wrap-up notes to be table stakes by 2026.
ExamplesReal call center work looks nothing like the stereotype. A handful of representative operations in 2024:
Concentrix runs more than 440,000 agents across 70 countries, supporting brands like Airbnb and Samsung from delivery centers in Manila, Bogotá, and Cairo. Teleperformance, headquartered in France, posted EUR 8.3 billion in 2023 revenue serving Apple, Uber, and dozens of fintech clients out of Philippine and Indian hubs. TaskUs scaled trust-and-safety and content-moderation lines for Meta, DoorDash, and Netflix from sites in Manila, San Antonio, and Athens. SP Madrid, a mid-market Philippine BPO, runs sub-100-seat campaigns for SaaS and ecommerce clients who can't justify a tier-one provider.The Philippines passed India as the world's largest English-language voice destination around 2011 and hasn't ceded the lead since. The IT and Business Process Association of the Philippines tracks roughly 1.7 million sector workers, with call center agents the single biggest cohort. India still dominates non-voice and tech-support work, while Latin American hubs like Bogotá and Guadalajara grew fast through 2023 on the back of nearshore demand from US clients.
Related termsA call center sits inside a wider cluster of related concepts you'll bump into when scoping a partner:
Contact center: the omnichannel successor that adds chat, email, social, and messaging to voice. BPO: business process outsourcing, the umbrella under which call centers operate. Inbound call center: receives customer-initiated calls for service or support. Outbound call center: places agent-initiated calls for sales, retention, or collections. Customer service: the work category most voice agents are paid to deliver. Telemarketing: outbound sales via phone, a regulated subset of outbound work. Virtual assistant: a one-to-one outsourced role that sometimes overlaps with low-volume support. FAQ What does a call center actually do?A call center handles voice interactions between a business and its customers. Agents take inbound calls for support, billing, or orders, or place outbound calls for sales, surveys, and collections.
Is a call center the same as a contact center?No. Call centers are voice-only or voice-led. Contact centers handle voice plus digital channels (chat, email, SMS, social) through a single agent desktop. Most modern operations are technically contact centers, even when people still call them call centers.
How much does call center outsourcing cost?Pricing varies by geography and model. Philippine agents typically bill at USD 8–15 per hour fully loaded; US onshore runs USD 25–45. Per-minute and per-call pricing remains common for high-volume inbound work.
Will AI replace call center agents?Not entirely, and not soon. According to McKinsey, AI is automating routine queries and assisting human agents on complex calls, shifting the agent role toward higher-value problem solving rather than wiping it out.
Which countries lead in call center outsourcing?The Philippines and India lead in voice volume, followed by South Africa, Colombia, and Egypt for English-language work, plus Poland and Romania for European-language coverage.
How do I pick the right call center partner?Match the provider's vertical experience to your industry, audit their security certifications (PCI DSS, ISO 27001, SOC 2), pilot a small campaign before scaling, and insist on transparent pricing and live agent dashboards.
Want a shortlist of vetted partners by country, size, and specialty? Browse the Outsource Accelerator BPO directory to compare providers side by side.
What is Employee Satisfaction (ESAT)?
What is employee satisfaction (ESAT)?Employee satisfaction (ESAT) measures how content and happy employees are with their current positions. The computation is quite simple. Companies use ESAT surveys to compute this metric.
Although this metric is not an ultimate tool to determine employee satisfaction at the deeper level, it is enough as a start, especially if your business is experiencing fast turnover.
Many factors affect employee satisfaction. These factors may include compensation, team environment, workload, management perception, and among other things.
You can add all of these elements to the survey to determine your ESAT score. Alternatively, you can use an individual survey for each factor.
Aside from quantitative aspects, qualitative evaluation of the survey is also crucial in determining whether your employees are satisfied or not. For example, one employee scores a good to a perfect rating for all other factors except for management perception.
This exception should be a good indicator that something’s not good at the management level or maybe conflict is rising that you might want to investigate.
ESAT score Every team requires engaged members for the business’ high performance and stability. ESAT score is a great way to tell if your employees genuinely like the team that they are working with.
When employees do not feel involved with their jobs or their colleagues, happiness levels tend to decline. Often, it negatively affects the productivity of the whole company.
A 2020 Gallup poll found out that when workers felt actively engaged, productivity and profitability increased by 18% and 23% respectively.
Due to these, you and your team should always discuss the overall ESAT score regardless of the outcome. This can be treated as an opportunity for everyone to give their feedback, share their sentiments, and learn collectively from the insights of everyone.
Your team could also get to the root cause of the low ESAT ratings and share ideas on how to improve things in your team. This move could enhance employee relationships and improve everyone’s engagement within the team.
Employee satisfaction and outsourcingOutsource Accelerator has over 5,000 articles, 350+ podcast episodes, and a comprehensive directory with 2500 BPOs… all designed to make it easier for clients to learn more about managing an outsourcing team and ensuring that ESAT is consistently high.
What is an Outsourcing Company?
What is an outsourcing company?An outsourcing company handles various supporting processes of contracting companies. These supporting processes are activities that are not central to the company's business but cannot be done away with. Examples include payroll, customer service, accounting, IT, etc.
A great outsourcing company is someone that has proven expertise in the process to be outsourced, that has access to resources and technology not otherwise available to the contracting company. For a contracting company to fully leverage the advantage of outsourcing, it is preferable that the outsourcing company will have it's own key performance indicators to help drive innovation and growth for the contracting company.
Outsourcing companies in the PhilippinesOutsourcing evolved a lot during the past decade, it is no longer all about customer service outsourcing. Nowadays, it is very common to outsource other functions such as finance & accounting, lead generation, software development or digital marketing. Outsourcing is also applicable to any industry and any business size, as long as the job can be done in front of a computer, then it can be outsourced.
Outsource Accelerator's directory lists over 700+ outsourcing companies in the Philippines. All of these are carefully selected for innovation, expertise, and technology that will benefit our clients. We also provide you with guidance on how to maximize the potential that such expertise gives you in growing your business.
What is What is business process outsourcing??
What is business process outsourcing (BPO)?Business process outsourcing (BPO) is the practice of contracting a third-party provider to run a defined business function such as customer support, payroll, accounting, or IT helpdesk. The provider takes ownership of the people, process, and technology, and bills you on a per-seat, per-transaction, or fixed-fee basis.
BPO sits at the intersection of labour arbitrage and operational focus. You hand off a non-core function to a specialist that can run it cheaper, faster, or better, and your in-house team gets to concentrate on what actually moves the business.
The category covers everything from a 4-seat phone team in Cebu answering after-hours calls for a US plumbing firm, to a 5,000-seat captive in Manila handling global claims processing for a Fortune 500 insurer. Same idea, very different scale.
If you've used Apple support, ordered from Amazon, or paid with Wells Fargo, you've talked to a BPO provider — you just didn't know it.
How it worksA BPO engagement runs in three layers: contract, transition, and steady state. You scope the function, sign a service level agreement that locks in response times, quality thresholds, and pricing, then transition the work through documented playbooks and parallel runs before the provider takes the keys.
Pricing usually falls into one of four shapes:
Model
How you pay
Best for Per FTE (seat)
Fixed monthly rate per agent
Steady-volume work like inbound support Per transaction
Set fee per call, ticket, or invoice
Variable-volume back-office tasks Outcome-based
Tied to a KPI like CSAT or collections
Mature processes with clean metrics Hybrid
Base FTE rate plus variable bonus
Long-term partnershipsLocation choice drives most of the savings. Sending work to the Philippines or India (offshoring) typically cuts loaded labour cost by 50–70% versus a US in-house team. Sending it to Mexico or Colombia (nearshoring) trims 30–50% while keeping you in roughly the same timezone. Keeping it domestic (onshoring) protects timezone and language fit but barely moves the cost needle.
The provider absorbs the recruiting, training, real estate, tech stack, and compliance burden. You absorb the vendor-management overhead and the risk that comes with handing a function to an outsider.
ExamplesThe global BPO market hit roughly USD 347.95 billion in 2025 and is projected to grow at a 10.05% CAGR through 2035, according to Precedence Research. That growth is concentrated in a handful of hubs and a handful of named buyers.
Google has used Philippine and Indian BPO partners since 2016 for content moderation, ads review, and customer support — a quiet workforce that scales with each product launch. Meta contracts Accenture and TaskUs in Manila for content moderation; the work pulled enough scrutiny in the early 2020s that Meta eventually broadened its provider base across multiple regions. Wells Fargo has operated a Manila back-office hub since 2011, handling mortgage processing, AML checks, and treasury operations for the US parent. JPMorgan Chase runs large captive and outsourced operations in India and the Philippines for KYC, trade settlement, and analytics.The Philippines remains the standout English-language hub. According to the IT and Business Process Association of the Philippines, the country's IT-BPM sector generates roughly USD 40 billion in revenue and employs about 1.9 million people, with growth targets pushing past 2.5 million by 2028.
Related terms Outsourcing: the umbrella term; BPO is the back-office and front-office slice that runs whole processes rather than one-off projects. Offshoring: moving work to a distant country (e.g. US to Philippines). A location choice, not a contracting choice. Nearshoring: moving work to a nearby country (e.g. US to Mexico) to keep timezone and culture closer. Knowledge process outsourcing: KPO handles judgment-heavy work like legal research or equity analysis, not transactional tasks. Call center: one delivery format inside BPO, focused on inbound or outbound voice. Back office: the non-customer-facing operations layer that BPO most commonly absorbs. Service level agreement: the contract clause that defines what "good" looks like in a BPO deal. FAQ What is business process outsourcing in simple terms?BPO is paying another company to run a piece of your business for you, usually a repeatable function like answering support calls, processing invoices, or managing payroll. You keep the brand and the strategy; they run the operation.
What is the difference between BPO and outsourcing?Outsourcing is the broad category — anything you contract out, including one-off projects. BPO is the subset where a provider runs an ongoing, defined business process end-to-end, typically with its own staff, systems, and SLAs.
Is BPO only about cost savings?No. Cost is the entry argument, but mature buyers cite access to specialist talent, 24/7 coverage, faster scaling, and freeing in-house leaders to focus on growth as bigger long-term wins. See the directory of vetted providers on Clutch for how the market positions itself today.
What functions do companies outsource most often?Customer support, IT helpdesk, finance and accounting, payroll, HR administration, content moderation, and data entry top the list. Higher-judgment work like legal research, equity analysis, and medical coding has shifted to KPO providers over the last decade.
Which countries dominate the BPO industry?The Philippines leads voice and customer experience, India leads IT and analytics, and Latin America (Mexico, Colombia, Costa Rica) leads nearshore work for North American buyers. Eastern Europe serves Western European clients on similar terms.
How do I choose a BPO provider?Match scale to your volume, check for relevant compliance (ISO 27001, HIPAA, PCI DSS, SOC 2), ask for two reference clients in your industry, and pilot a small scope before committing to a multi-year contract. Walk away from any provider that won't share agent attrition data.
Ready to scope a BPO partner? Outsource Accelerator lists 4,000+ vetted providers across the top global hubs — use the directory to shortlist, compare pricing, and book intro calls without paying a referral fee.
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