Clearance items can be either customer returns in "like-new" condition (Open Box Items), unused inventory stock rotation, or manufacturer refurbished. All items are tested, quality assured, fully functional, and carry a full 90 day manufacturer's warranty.
The TE820 is designed for businesses using high-density Asterisk applications that require high-performance digital connectivity. With its eight independently software-selectable digital telephony interfaces, supporting up to 192 channels in T1/J1 mode or 240 channels in E1 mode, the TE820B has the highest port density density available for use with Asterisk. The TE820B includes a VPMOCT256 echo cancellation module.
Features Up To Eight (8) T1, E1 or J1 interfaces* Up to 192 (T1/J1) or 240 (E1) simultaneous calls Interfaces are software selectable (T1, E1 or J1 Mode) Half-length, full-height PCI-Express card Optional 128ms hardware echo cancellation module *4 RJ-45 connectors, each supporting two circuits. Break-out dongles are included.
The TE820B supports ISTPs, including several variants of Primary Rate ISDN, and each span can be configured as either CPE or network for optimum adaptability. With the VPMOCT256 hardware echo cancellation module, the CPU is not burdened with echo cancellation, improving call quality and overall system performance.
The TE820B is fully compatible with current software applications and is completely integrated with Digium's Asterisk software. Custom application development is facilitated with the open source drivers for Digium cards, which support an application programming interface (API). Whether your business telephony platform includes a PBX system, VoIP gateways, call centers or complete unified communications suites, the combination of Digium hardware and Asterisk software provides a cost-sensitive foundation. With the TE820, Digium remains the vanguard of the new generation of worldwide communications.
-Up To Eight (8) T1, E1 or J1 interfaces* -Up to 192 (T1/J1) or 240 (E1) simultaneous calls -Interfaces are software selectable (T1, E1 or J1 Mode) -Half-length, full-height PCI-Express card - 128ms hardware echo cancellation module *4 RJ-45 connectors, each supporting two circuits. Break-out dongles are included. Target Applications -Enterprise Phone Systems -Enterprise IVR Servers -High-density VoIP gateway systems -High-density conferencing systems -Carrier media server platforms Framing Types -Superframe (D4) -Extended Superframe (ESF) -Channel Associated Signaling (CAS) -Common Channel Signaling (CCS) Coding Types -Alternative Mark Inversion (AMI) -Bipolar with Eight (8) Zero Substitution (B8ZS) -High Density Bipolar Order Three (HDB3) with optional CRC4 PRI Switch Compatibility -EuroISDN (PRI or PRA) — Q.931/Q.921 -AT&T 4ESS Network or CPE -DMS 100 National ISDN 2 -Lucent 5E CAS Voice Modes