The term “leased line” gets thrown around a lot in enterprise networking discussions — sometimes correctly, sometimes interchangeably with DIA or broadband, which it is not. If you’ve been quoted one, are comparing it against other options, or simply want to understand what your IT team is asking for, this guide explains exactly what a leased line is, how it works, and whether your business actually needs one.
What is a leased line?
A leased line is a private, dedicated telecommunications circuit that permanently connects two specific locations. You rent it from a telco on a monthly basis — hence “leased” — and that connection is yours alone, 24 hours a day, 7 days a week.
There is no public internet involved. No shared bandwidth with other businesses. No contention during peak hours. The circuit runs from Point A to Point B, and everything travelling over it stays entirely within that private link.
The simplest way to think about it
Broadband is a motorway — fast, but shared with thousands of other drivers. A leased line is your own private road between two buildings that only your vehicles can use, at any speed you’ve contracted for, at any time.
How does a leased line work?
Your telco runs a dedicated fibre optic cable from your premises directly to the other end of the circuit — whether that’s another office, a data centre, or a partner location. The key characteristics that make it different from every other internet product:
- Point-to-point only. One leased line connects exactly two locations. If you have three offices to connect, you need two leased lines — or a Metro-E setup, which is designed for multi-site connectivity.
- Symmetrical bandwidth. Upload and download speeds are identical. A 100Mbps leased line gives you 100Mbps in both directions — critical for businesses sending large files, running real-time backups, or hosting VPN endpoints.
- Always-on. There is no dial-up, no session, no authentication. The circuit is permanently active the moment it’s provisioned.
- Fully private. Traffic never touches the public internet. This makes leased lines the default choice for industries with strict data security or compliance requirements — finance, healthcare, legal, government.
- SLA-backed. Your telco commits to a guaranteed uptime (typically 99.9%+), a defined response time if it goes down, and compensation if those terms are breached.
What is a leased line used for in Malaysia?
Leased lines are not general-purpose internet connections. They solve specific connectivity problems that broadband or DIA cannot address. Common use cases in Malaysia:
- HQ to branch office. Secure, private connection between your KL headquarters and a regional office in Penang or JB — no VPN tunnelling over the public internet.
- Office to data centre. Direct private link to your colocation facility in Cyberjaya or a cloud on-ramp — low latency, no public internet hops.
- Malaysia to Singapore. Cross-border connectivity for companies with offices in both countries — private and SLA-backed across the causeway.
- Regulated industries. Banks, insurance firms, and healthcare providers that cannot route sensitive data over shared infrastructure.
- Manufacturing and industrial. Factory-to-HQ links for ERP, SCADA, and real-time production monitoring — where latency and reliability directly affect operations.
- Disaster recovery. A private backup path between your primary site and DR site — separate from your internet connection so one failure doesn’t take out both.
Leased line vs DIA vs broadband — what’s the difference?
These three products are frequently confused. Here’s what actually separates them:
| Leased line | DIA | Broadband | |
|---|---|---|---|
| What it connects | Two specific locations (private) | Your office to the internet | Your office to the internet |
| Uses public internet? | No | Yes | Yes |
| Bandwidth shared? | No — 100% dedicated | No — 100% dedicated | Yes — shared with others |
| Symmetrical speeds? | Yes | Yes | No (faster download) |
| SLA included? | Yes | Yes | No |
| Best for | Private site-to-site links | Enterprise internet access | Small office / backup line |
The key distinction: a leased line does not give you internet access. It gives you a private tunnel between two points. Most businesses that need a leased line also need DIA separately — the leased line handles their private connectivity, and DIA handles their internet access.
What is a point-to-point leased line?
You’ll often see the term “point-to-point leased line” (P2P) — this simply describes the topology of a leased line. One circuit, two endpoints, completely private. It distinguishes the product from older multi-point arrangements or modern overlay technologies like MPLS.
In Malaysia, when a business or telco says “leased line”, they almost always mean a point-to-point fibre circuit. DACS specialises in exactly this product — private P2P connectivity across Klang Valley, Penang, Johor, and cross-border to Singapore.
How is a leased line installed in Malaysia?
- Site survey and feasibility. The telco confirms fibre availability at both endpoints. If your building is already fibre-lit, installation is faster. If a new fibre pull is needed, add 2–4 weeks to the timeline.
- Circuit order and provisioning. Once the order is confirmed, the telco provisions the dedicated circuit between your two sites. Lead times for a standard P2P in Klang Valley typically run 6–10 weeks.
- CPE installation at both ends. A router or managed CPE (Customer Premises Equipment) is installed at each location. DACS provides fully managed CPE — meaning if the device fails, it’s our problem, not yours.
- Testing and handover. The circuit is tested end-to-end for latency, jitter, and packet loss against the contracted SLA. You receive a formal handover document and the link goes live.
- Ongoing monitoring. DACS operates a 24/7 Network Operations Centre (NOC) that proactively monitors your leased line. You’re notified before most issues become outages.
How much does a leased line cost in Malaysia?
Leased line pricing is highly site-specific — the two biggest variables are the distance between your two endpoints and whether fibre already passes through both buildings. Key factors that affect pricing:
- Distance between sites. A KL HQ to a KL data centre is cheaper than KL to Penang. Cross-border (KL to Singapore) is priced separately.
- Bandwidth contracted. From 2Mbps to 10Gbps — the wider the pipe, the higher the monthly fee.
- Telco and route. TM, Maxis, TIME, and uMobile each have different infrastructure strengths and pricing structures. No single telco is always cheapest.
- Contract term. 36-month contracts typically deliver 15–25% lower monthly rates versus 12-month terms.
- Managed vs unmanaged. A managed service (where the provider handles CPE, monitoring, and faults end-to-end) costs more but removes all operational overhead from your team.
Why you should compare before you sign
Going directly to one telco means you get one price. DACS compares leased line pricing across all four Malaysian Tier-1 telcos simultaneously — TM, Maxis, TIME, and uMobile — for the same route and bandwidth. The difference between the most and least expensive quote for the same circuit is often 20–35%.
Do you need a leased line, or is DIA enough?
The quickest way to tell:
- If you need to connect your office to the internet with dedicated, SLA-backed bandwidth → you need DIA.
- If you need to connect two of your own locations privately — office to office, office to data centre, or cross-border — without going over the public internet → you need a leased line.
- If you need to connect more than two of your own locations privately → consider Metro-E instead of multiple leased lines.
- If you need both private site connectivity and internet access at each location → you likely need both a leased line and DIA.
Not sure which applies to your setup? DACS can assess your connectivity requirements — office locations, traffic types, uptime needs, and budget — and recommend the right combination.
Frequently asked questions
Is a leased line the same as DIA?
No. DIA (Dedicated Internet Access) connects your office to the public internet over a dedicated line. A leased line connects two of your own locations to each other privately — it does not provide internet access. Both are dedicated and SLA-backed, but they serve different purposes. Many businesses run both: a leased line for private site connectivity, and DIA for internet access.
What is the minimum bandwidth for a leased line in Malaysia?
Leased lines in Malaysia typically start from 2Mbps and scale up to 10Gbps. For most enterprise use cases — ERP access, VoIP, file sync between offices — 10Mbps to 100Mbps is the common starting range. The right bandwidth depends on the number of users, applications, and data volumes between your two sites.
How long does leased line installation take in Malaysia?
For sites within Klang Valley where fibre already exists at both buildings, installation typically takes 6–10 weeks from order confirmation. Longer lead times apply for cross-state circuits (KL to Penang or JB), buildings requiring a new fibre pull, or international routes (Malaysia to Singapore). DACS provides a site-specific lead time estimate as part of the quotation.
Can I get a leased line between Malaysia and Singapore?
Yes. Cross-border leased lines between Malaysia and Singapore are a common requirement for companies with regional operations. TM and Maxis are the primary providers for this route. Pricing and lead times differ from domestic circuits — DACS can source and manage the full cross-border provisioning process.
What happens if the leased line goes down?
Your SLA specifies a Maximum Time to Repair (MTTR) — typically 4 hours for enterprise-grade circuits within major Malaysian cities. If the telco fails to restore within that window, the SLA triggers compensation (a credit against your monthly bill). DACS’s 24/7 NOC monitors your circuit proactively and escalates to the telco immediately on detection — not only when you call in to report it.
What is the difference between a leased line and Metro Ethernet?
Both are private, dedicated, and SLA-backed — but Metro-E is designed for connecting multiple sites (three, five, ten locations on one network), whereas a leased line connects exactly two. If you have two locations to connect privately, a leased line is typically simpler and cheaper. If you have three or more, Metro-E is usually the better architecture.
Need a leased line quote for your Malaysian business?
DACS compares point-to-point leased line pricing across TM, Maxis, TIME, and uMobile for your specific route and bandwidth requirement. One conversation, four Tier-1 options, no obligation.