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Product Description for Digium – Quad Span T1/E1/J1 Card Product Highlight 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 Support for Asterisk®, FreeSWITCH®, and Yate® as well as other Open Source and proprietary PBX, Switch,IVR, and VoIP gateway applications Specifications Up to 24 (T1/J1) or 30 (E1) simultaneous calls Selectable T1, E1 or J1 Mode / Half-Length, Half-Height, Digital Card PCI-Express (TE131 and TE133) PCI (TE132 and TE134) Protocol support includes: ISDN PRI, Robbed-Bit, CAS Models TE133 and TE134 feature built-in 128ms Octasic DSP hardware echo cancellation One (1) RJ48 Interface Port |