What is a Bridge Tap?
A bridge tap (or bridged tap, or star wiring) is an unterminated or unused branch of a telecommunications circuit. When a junction is installed in the telephone circuit to provide an additional outlet somewhere else, a bridge tap is created.
Bridge taps are detrimental to data services delivered using xDSL technology as used by the majority of nbn™, and all ADSL services. The unused circuits act as antennas, channelling radio frequency into the circuit which adds noise to the line. The added noise on the line then causes a reduction in the achievable data rate (speed) of the circuit, and also causes dropouts.
A data circuit for xDSL should be straight. A node at one end, and a modem at the other. There should be no other branches or circuits or sockets connected to the circuit.
Impacts of Bridge Taps
The results above are snapshots of achievable line speed before and after bridge tap removal.
- Before results were 42Mbps download, 17Mbps upload.
- After results were 85Mbps download, 32Mbps upload.
The bridge tap was reducing the achievable line speed by 50%.
We will attend your premises and perform the following:
- Test service before work
- Locate and remove any bridge taps using enhanced testing procedures
- Test service after work
- Provide receipt with compliance certification for remediated internal wiring
Bridge taps affect the following technology types:
- nbn™ Fibre to the Node (FTTN)
- nbn™ Fibre to the Building (FTTB)
- nbn™ Fibre to the Curb (FTTC)
- ADSL services
Bridge tap removal price is $180, fixed fee.
Our service area is the Perth metropolitan area, Western Australia.