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Small white DSL line filter with two RJ12 ports labelled phone and modem

Micro Connectors

Micro Connectors C20-132 2 Port Dual DSL Line Filter

SKU CH-GYSF-M19J4 MPN C20-132

Dual RJ12 filter separates voice and DSL signals to eliminate line noise

  • Key features• 1 port for voice, 1 port for digital data signal • Allow v
  • Clear voice calls with one dedicated phone port
  • Simultaneous internet and phone use on a single line
  • Reduces DSL noise that disrupts telephone audio
  • RJ12 plug connects to dual RJ12 jacks
  • Jacks marked phone and modem for correct setup

Two-port DSL filter for voice and data

The Micro Connectors C20-132 splits a single telephone line into one port for voice calls and one for a digital data signal, allowing both to operate at the same time. It is designed for households or small offices that run DSL internet alongside a standard telephone handset. The RJ12 plug connects to the wall jack and the two RJ12 jacks are clearly marked for proper connection.

Noise suppression under continuous DSL use

The filter removes unwanted noise and connection problems that DSL service introduces on telephone equipment during sustained operation. By reducing digital interference on the voice circuit, it keeps call quality stable even when the data link is heavily loaded. This prevents the static or drop-outs that can appear on a phone line sharing an active DSL circuit.

Replaces a missing or worn single-line filter

It upgrades a setup that has no filter or relies on an older single-port adapter that cannot separate voice and modem signals cleanly. The jump is worth it when a telephone and a DSL modem share one wall outlet and the user experiences audible interference or unreliable sync. It does not address installations that require more than two simultaneous connections.

How it compares

Measured against everything we stock in Network Cabling Accessories, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 80% of the 800 comparable items (median $18.99).

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Specifications

Product
Brand nameMicro Connectors
Model nameC20-132
Size & build
Shipping weight0.23 kg
Package size152 × 102 × 51 mm

Questions about this item

Does the C20-132 filter consume any power or generate heat when left connected all day?

No, the filter is a passive device with no power requirement, so it draws no electricity and produces no heat during continuous use.

What type of wall socket and cables must I already have to install the C20-132?

You need an existing RJ12 telephone wall jack and standard RJ12 cables to connect both the filter and your devices.

Will the C20-132 work with an older analogue telephone and a legacy DSL modem at the same time?

Yes, the two clearly marked ports let you plug an analogue phone into the voice jack and a legacy DSL modem into the data jack simultaneously.

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