DVCOM Technology

dubai, United Arab Emirates

The A4 Series of analog cards supports up to four (4) connections per card in your Asterisk system. Using Digium's single-port interface modules, A4 series cards can scale from one (1) to four (4) ports. The modular nature of the cards allows you to mix and match between line (FXO) and station (FXS) interfaces, giving you the exact port configuration you need. Digium A4 Series analog cards are available in low profile, half-length PCI and PCI Express form factors. Digium cards are compatible with all versions of Asterisk using the DAHDI driver framework. Asterisk and DAHDI are available for free from the Asterisk.org website. All cards include a five (5) year warranty

Connect Asterisk-based systems to analog phone lines
• Connect analog PBX systems to VoIP services
• Channel Bank Replacement / Alternative
• Gateway Termination to analog telephones/lines
• Suitable for Small Office/Home Office (SOHO) and Small and Medium Business (SMB) applications

The Hx8 Series are versatile devices used for connecting to the PSTN. This is accomplished with analog lines connected to trunk (FXO) interfaces, analog handsets connected to station (FXS) interfaces, and digital lines connected to ISDN BRI interfaces. The Hx8 Series supports all three types of connectivity on a single card through the use of Digium's specialized telephony modules for FXO, FXS, and BRI. Used in conjunction with Asterisk, the Hx8-series hybrid telephony cards can deliver a wide range of voice applications including IP PBX, VoIP Gateway, IVR platform, Conference Bridge, Voicemail, and more.

• Connect Asterisk applications to ISDN and / or analog phone service
• Connect legacy analog and / or ISDN BRI PBX systems to VoIP services
• Build small form-factor solutions with both analog and ISDN technologies

FXS modules provide ringing voltage and battery to telephones or handsets and require substantial amount of 12V DC power in order to operate properly. The PCI interface on motherboards cannot provide sufficient quantities of this voltage necessary to ring 4, 8 or 24 modules. As a solution, Digium analog cards are mounted with a 4-pin disk-drive or Molex connector on the base board. This connector must be supplied with an internal power connector from the system's power supply if FXS modules are in use. For systems without available internal 12V power connectors, the PWR2400B is the solution. The PWR2400B provides the 12V DC power to analog interface cards that is necessary to drive FXS modules. FXO modules do not provide ring voltage or battery and thus do not require any external power resources. The PWR2400B, which does not connect to the PCI bus, occupies one server slot and ships with two 15" 12V four-pin cables that can be attached to analog