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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 TE820 has the highest port density density available for use with Asterisk.
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
-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. 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
