The SEA-ME-WE-4 (SMW4) submarine cable system is currently the sole international optic fiber submarine cable landing in Bangladesh, with a cable landing station at Cox's Bazaar, built and owned by Bangladesh Submarine Cable Company (BSCCL) .

Since the landing of SMW4, the Internet infrastructure in Bangladesh has been significantly improved. The SMW4 is now the main link for the international internet gateway in Bangladesh, and is the truly and sole submarine internet cable in Bangladesh.

Mango, the only private sector international internet gateway (IIG) operator of Bangladesh, is connected to the global internet using the SEA-ME-WE 4 submarine cable system.  Mango won its license through an open auction from Bangladesh Telecommunication Regulatory Commission (BTRC) on February 25, 2008.

The Bangladesh Telecommunications Regulatory Commission (BTRC) issued draft licensing guidelines for two new submarine cable licences in early 2010. Each licensee should build a separate landing station within the general area of Khula-Patuakhali-Barisal-Chittagong, and should provide access, co-location and landing facilities to other submarine cable licensees, as and when required by the BTRC.

Besides the international submarine communication cable connecting Bangladesh, there are three terrestrial cables on India-Bangladesh boarders in Jessore, Sylhet-Comilla and Kurigram which may also bring Bangladesh into the global communication network.