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Digium Quad Span PRI Card

Digium's quad span digital interface cards connect 96 (T1 / J1) or 120 (E1) PSTN lines via four digital circuits.

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Digium Quad span digital cards are available in PCI-Express and PCI form factors, and can all be connected to an Octastic DSP-based module with echo cancellation capabilities. This enables the device to provide high-end hardware for echo cancellation across all available channels. Digium cards can support all types of Asterisk systems thanks to the DAHDI driver framework. Furthermore, users can get all versions of DAHDI and ASTERISK for free from the website. All digital cards are covered by a five-year warranty with the assurance of guaranteed risk-free quality and eligibility for Digium’s Exceptional Satisfaction Program (ESP). The Quad span digital interface cards are highly effective for PSTN connections, connecting up to four digital circuits while ensuring the highest quality possible. A fantastic device for transmitting digital data that ensures high-quality telecommunication services in offices. Furthermore, the multiple digital transmissions that it supports are excellent.

Features of  Digium Quad Span PRI Card

  • Up to 24 (T1/J1) or 30 (E1) concurrent calls per traverse (96 add up to T1/J1 and 120 aggregate E1 per card).
  • Supports T1, E1, and J1 physical interface associations.
  • Optional 128ms equipment reverberates the cancelation module.
  • Protocol bolster incorporates ISDN PRI, Robbed-Bit, CAS.
  • Industry-standard RJ-45 port.
  • Available in PCI and PCI Express shape variables.
  • 4 ports.
  • Asterisk and DAHDI upheld (DAHDI 2.8 or later required for the TE435).
  • Asterisk and DAHDI bolstered (DAHDI 2.10 or later required for the TE436).
  • Switchvox bolstered (Switchvox 5.8.1 or later required for the TE435).
  • Switchvox does not bolster the TE436 card.

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Product Specification


Digium Digital PCI/PCI-Express
1-8 Ports E1/T1/PRI Yes
32-bit 33MHz Yes
5 Year Warranty Yes
Built in Octasic DSP Echo Cancellation for the TE133 and TE134 Yes
Built-in CSU/DSU Yes
Optional Octasic DSP Echo Cancellation(2, 4, and 8 port models) Yes
RJ48C Ports Yes
RoHS Compliant Yes
Temperature: 0 to 50° C Yes
Coding Types
Alternative Mark Inversion (AMI) Yes
Bipolar with Eight (8) Zeros Substitution(B8ZS) Yes
High Density Bipolar of Order Three (3) Code(HDB3)* Yes
Framing Types
Channel Associated Signaling (CAS) Yes
Common Channel Signaling (CCS) Yes
Extended Superframe (ESF) Yes
Superframe (D4) Yes
PRI Network and CPE
EuroISDN Q.931 Yes
Lucent 5ESS Yes
National ISDN 1 (NI1) Yes
National ISDN 2 (NI2 Yes
Nortel DMS100 Yes
Primary Rate Interface (PRI) Switch Types Yes
Q.SIG (Limited Support) Yes
Signaling Types
E&M, E&M E1, E&M Wink Yes
Feature Group B Yes
Feature Group C-CAMA Yes
Feature Group C-CAMA (MF) Yes
Feature Group D (DTMF) Yes
Feature Group D (MF) Yes
Feature Group D (Tandem Access) Yes
Foreign Exchange Office (FXO) Loop Start, Yes
Foreign Exchange Station (FXS) Loop Start, Yes
Ground Start, Kewl Start Yes

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