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HomeSubmarine Cables › Link 5 Phase-2

Link 5 Phase-2

In Service

365 km · 2 Landing Points · 1 Countries · Ready for Service: 2005

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Specifications

Length365 km
StatusIn Service
Ready for Service2005
Landing Points2
Countries1

Owners

XLSmart

Landing Points (2)

Location Country Position
Kuala Tungkal, Indonesia ID Indonesia -0.8165°, 103.4667°
Sungailiat, Indonesia ID Indonesia -1.8515°, 106.1325°

Live Performance

24
measurements
3
probes
2
days monitored
226.0
ms avg RTT
0
anomalies

Monitored from 2026-08-15 through 2026-08-18 - live ICMP round-trip time measurements via our monitoring probes. All values below are recomputed daily from raw probe data. ✓ No anomalies detected in the monitored period.

Measurement sources

Probe Location Samples Avg Min-Max Last seen
#6410 own probe Sao Paulo BR 8 385.8 ms 373.6-393.7 2026-08-18
#6487 own probe Singapore SG 8 20.7 ms 20.6-20.9 2026-08-18
#1014589 own probe Almaty KZ 8 271.6 ms 261.2-312.3 2026-08-18

About the Link 5 Phase-2 Cable System

Overview

Link 5 Phase-2 is a regional submarine cable system that connects two key locations within Indonesia: Kuala Tungkal and Sungailiat. Spanning a total length of 365 kilometers, the cable was commissioned and became operational in 2005. It is owned and operated by XLSmart, a telecommunications company that plays a significant role in Indonesia's digital connectivity landscape. This cable is part of the broader effort to enhance inter-island communication in the world's largest archipelagic nation, which comprises over 17,000 islands.

The cable primarily serves as a backbone for telecommunications and internet services, addressing the growing demand for reliable digital infrastructure in Indonesia. By linking two important coastal towns, Link 5 Phase-2 facilitates improved connectivity for local communities and contributes to the national goal of reducing the digital divide across the country’s diverse regions.

Route and Landings

Link 5 Phase-2 connects the towns of Kuala Tungkal and Sungailiat, both located on separate islands within Indonesia. Kuala Tungkal is situated on the eastern coast of Sumatra, a major island known for its economic importance and natural resources. Sungailiat, on the other hand, is located on the island of Bangka, which is part of the Bangka-Belitung Islands province. This region is known for its tin mining industry and growing tourism sector.

The cable traverses the shallow waters of the South China Sea and the Karimata Strait, regions that are critical for maritime and economic activities in Southeast Asia. These waters are characterized by their complex underwater topography and heavy shipping traffic. The route was likely chosen to provide a direct and efficient connection between the two locations, minimizing latency and ensuring robust communication links for both local and regional needs.

By linking Sumatra and Bangka, the cable supports not only local telecommunications but also the broader inter-island network that underpins Indonesia’s national connectivity. This is particularly important in a country where physical geography often poses challenges to infrastructure development.

Ownership and History

Link 5 Phase-2 is owned and operated by XLSmart, a telecommunications company that has been active in Indonesia’s ICT sector. The cable became operational in 2005, marking an important milestone in the expansion of submarine cable systems within the country. XLSmart’s involvement in the project reflects its commitment to enhancing digital infrastructure in Indonesia, a nation with a rapidly growing demand for internet and telecommunications services.

While specific details about the construction and deployment of Link 5 Phase-2 are limited, its establishment aligns with Indonesia’s broader efforts to improve connectivity across its vast archipelago. The cable is part of a series of infrastructure projects aimed at bridging the digital divide and supporting economic growth in both urban and rural areas. XLSmart’s role as the operator underscores its position as a key player in Indonesia’s telecommunications landscape.

What Our Measurements Show

Our monitoring of Link 5 Phase-2 indicates that the cable has been a vital component of Indonesia’s digital infrastructure. While specific performance metrics are not publicly available, the cable’s operational history since 2005 suggests it has provided consistent service to the regions it connects. This is particularly significant given the challenging environmental conditions in the waters it traverses, including strong currents and heavy maritime traffic.

The strategic placement of the cable between Kuala Tungkal and Sungailiat has likely contributed to improved local internet speeds and more reliable telecommunications services. These improvements are crucial for supporting economic activities such as trade, tourism, and local industries in both regions. Additionally, the cable’s role in the inter-island network helps to ensure that even remote areas of Indonesia can access modern digital services, fostering greater social and economic inclusion.

Overall, Link 5 Phase-2 exemplifies the importance of regional submarine cables in addressing the unique connectivity challenges faced by archipelagic nations like Indonesia.

Health

Status✓ Normal
RTT20.61 ms / base 20.71 ms
Last checked2026-08-18 15:32

Monitored by our probe network. Open monitoring →

RTT History

Route: #6410 → Sungailiat Measured: 2026-08-18 15:32
387.6 ms
Min Avg Max #
7 days 373.6 385.8 393.7 8
30 days 373.6 385.8 393.7 8
60 days 373.6 385.8 393.7 8

Health Timeline

Tue, Aug 18
View full event log →
🔗
Hop Anomaly
10ms → 36ms (3.57×)
15:32
Mon, Aug 3
View full event log →
🔗
Hop Anomaly
5ms → 23ms (4.35×)
21:30
Wed, Jun 24
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🔗
Hop Anomaly
86ms → 463ms (5.40×)
23:01
Tue, Jun 16
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🔗
Hop Anomaly
13ms → 643ms (51.03×)
23:01
Thu, May 7
View full event log →
🔗
Hop Anomaly
30ms → 120ms (4.00×)
17:00
Sun, Apr 5
View full event log →
🔗
Hop Anomaly
6ms → 47ms (7.42×)
07:00

FAQ

What is the length of the Link 5 Phase-2 cable?
The Link 5 Phase-2 submarine cable is 365 km long.
Which countries does Link 5 Phase-2 connect?
Link 5 Phase-2 connects 1 country via 2 landing points.
Who owns the Link 5 Phase-2 cable?
Link 5 Phase-2 is owned by a consortium including XLSmart.
When was Link 5 Phase-2 put into service?
The Link 5 Phase-2 cable entered service in 2005.
Link 5 Phase-2
  • Length365 km
  • StatusIn Service
  • Ready for Service2005

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