Sangoma Four-Span T1/E1/J1

Buy 4 Port PRI Card with Echo Canceller

The Sangoma A104 board: Four spans of optimized voice and data over T1, E1, and J1 lines. This 4 port PRI Digital card supports up to 120 voice calls or 8.192 Mbps of full–duplex data throughput over four T1, E1, or J1 lines. The 4 port pri digital card is equipped with world class DSP hardware to achieve carrier-grade Echo Cancellation and Voice Quality Enhancement functions for your telephone systems.

Optional DSP Hardware Echo Canceller Daughterboard  G.168–2002 echo cancellation in hardware  1024 taps/128 ms tail per channel on all channel densities  DTMF decoding and tone recognition  Voice quality enhancement: music protection, acoustic echo control, and adaptive noise reduction  Does not increase the physical size of the board, and no additional slot is required Learn More...

Digium 4 PORT Digital PRI Cards

Quad Span

Digium's quad span digital interface cards support 96 (T1 / J1) or 120 (E1) connections to PSTN trunks over four spans (digital circuits). Built exclusively for use with Asterisk and Asterisk-based communications systems, the quad span digital cards provide the best value in digital connectivity.
Quad span digital cards are available in PCI and PCI-Express form factor. Digium cards are compatible with all versions of Asterisk using the DAHDi driver framework.

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Digium 4 PORT Digital PRI Cards

Quad Span – Echo cancellation

Digium's quad span digital interface cards support 96 (T1 / J1) or 120 (E1) connections to PSTN trunks over four spans (digital circuits). Built exclusively for use with Asterisk and Asterisk-based communications systems, the quad span digital cards provide the best value in digital connectivity.
Quad span digital cards are available in PCI and PCI-Express form factor. All quad span models be combined with Digium's VPMOCT128 echo cancellation module to provide echo cancellation across all channels. Digium cards are compatible with all versions of Asterisk using the DAHDi driver framework.

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4 Port PRI Card from *astTECS

*astTECS offers *ast 4 PRI, the four port digital PRI card at the market competitive rate. The *ast 4 PRI card is capable to support up to 30 voice calls per span, full-duplex data throughput. The card can be used to create powerful PBX system with Asterisk – the open source platform.
To further improve the output, we need to add the 128ms Hardware based Echo Cancellation Module and reach the highest standard in voice quality on the market.

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FXS Analog Card

4 – Port Analog Telephony Card

The 4-port FXS Analog Card supports up to four (4) connections per card in the Asterisk system. The modular nature of the cards allows you to mix and match between line (FXO) and station (FXS) interfaces, giving the exact port configuration required.
FXS is the ‘Foreign eXchange Subscriber’ interface (the plug on the wall) delivers analog telephony services to your home by local phone companies through a circuit consisting of two copper wires; connected to the subscriber equipment (telephones, modems, and fax machines).

Primarily, the services provided by an FXS interface to any subscriber device are: * Dial Tone * Battery Current * Ring Voltage Learn More...

Sangoma 4 Port FXS Card

Analog Voice Boards / Analog Telephony Interface boards

Sangoma 4 Port FXS is among the highest quality Analog Telephony Interface boards for connecting Asterisk ®, FreeSWITCH® and many proprietary phone systems to the PSTN. Sangoma 4 Port Analog Telephony Interface boards are also an outstanding choice for building proto-type and proof-of-concept systems. The same drivers and API’s that are used for building a system that supports two telephony calls are used for systems that can support thousands of calls. The 4 Port FXS analog voice boards deliver superior audio quality in a 2U board that expands from two to four ports using a single interface slot.

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FXS Analog Card

8 – Port Analog Telephony Card

The 8-port FXS Analog Card supports up to eight (8) connections per card in the Asterisk system. The modular nature of the cards allows you to mix and match between line (FXO) and station (FXS) interfaces, giving the exact port configuration required.
FXS is the ‘Foreign eXchange Subscriber’ interface (the plug on the wall) delivers analog telephony services to your home by local phone companies through a circuit consisting of two copper wires; connected to the subscriber equipment (telephones, modems, and fax machines).

Primarily, the services provided by an FXS interface to any subscriber device are: * Dial Tone * Battery Current * Ring Voltage Learn More...

Sangoma 8 Port FXS Card

Analog Voice Boards / Analog Telephony Interface boards

Sangoma 8 Port FXS is among the highest quality Analog Telephony Interface boards for connecting Asterisk ®, FreeSWITCH® and many proprietary phone systems to the PSTN. Sangoma 8 Port Analog Telephony Interface boards are also an outstanding choice for building proto-type and proof-of-concept systems. The same drivers and API’s that are used for building a system that supports two telephony calls are used for systems that can support thousands of calls. The 8 Port FXS analog voice boards deliver superior audio quality in a 2U board that expands from two to eight ports using a single interface slot.

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Sangoma 24 Port FXS Card

Analog Voice Boards / Analog Telephony Interface boards

Sangoma 24 Port FXS is among the highest quality Analog Telephony Interface boards for connecting Asterisk ®, FreeSWITCH® and many proprietary phone systems to the PSTN. Sangoma 24 Port Analog Telephony Interface boards are also an outstanding choice for building proto-type and proof-of-concept systems. The same drivers and API’s that are used for building a system that supports two telephony calls are used for systems that can support thousands of calls.
The 24 Port FXS analog voice boards deliver superior audio quality in a 2U board that expands from two to eight ports using a single interface slot.

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