| Subisu cablenet Ltd. | |
| Type: | Limited |
| Foundation: | 2001 |
| Location: | Kathmandu, Nepal |
| Area Served: | Nepal |
| Industry: | ISPs |
| Services: | Fiber internet, cable internet, digital TV |
| Num Employees: | 1500+ |
Subisu Cablenet Ltd. is a Nepalese Internet Service Provider company located in Kathmandu, Nepal, and was established in 2001. Subisu employs over 1500 full-time employees, of which around 900 are technical and around 700 are non-technical. As of 2023, the company has over 235,000 customers. It has coverage in all 77 districts of Nepal. Subisu primarily provides cable and fiber internet and digital TV services through a hybrid fiber-coaxial (HFCC) network.
Optical fiber cable (OFC) is used by Subisu to transmit TV channels and fiber connectivity. Its HFC network uses coaxial cable laid with MPLS (Multi-Label Protocol Switching) and a redundant metropolitan access network. The network's headend is in Baluwatar, Kathmandu, and spreads across major locations in the valley.
Data over Cable Service Interface Specifications (aka DOCSIS) 3.0 is standard technology certified by Cable labs. The DOCSIS 3.0 (Annex B) standard provides 42 Mbit/s per channel (theoretically) and 37 Mpbs (practically) downstream per channel. Downstream can bond up to eight channels, which increases the downstream throughput up to (37 × 8) and 27 Mbit/s upstream bandwidth per channel. This is the standard cable modem protocol established by MCNS for bi-directional transfer of Internet Protocol (IP) traffic over cable. Subisu uses Metropolitan Access Network (MAN) technology for its optical fiber cable services.