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Fixed VoIP to T1/E1 PRI Gateway


Product Overview

SETU VTEP is a compact, dedicated and feature-rich VoIP to T1/E1 PRI gateway.It is a single-span gateway offering 30 simultaneous VoIP to ISDN PRI calls. This in-line device sits between ISDN PBX and T1/E1PRI line to connect PBX users to the IP network for cost-effective communication. For an IP based system it provides T1/E1PRI trunking.

The gateway efficiently delivers toll-grade voice quality with industry standard voice codecs and advanced QoS techniques. Multiple mounting options and remote management through web-based console adds to the operating ease.

The gateway is suitable for SMBs, Large enterprises, VoIP service providers and System integrators for smooth migration to the new-age IP telephony. It helps them to control the communication overheads and realize an earlier return on investment through advanced features and functionalities. With SETU VTEP, multi-branch offices can use their existing broadband connections to setup cost-effective IP communication among them.


  • VoIP Access for legacy phone systems with T1/E1PRI interface
  • Programmable TE/NT modes
  • Retain existing PBX infrastructure and dialing habits
  • Existing terminals can be used to place VoIP calls
  • Network clock synchronization for error-free communication
  • Compatible with most make of ISDN PBX

  • ISDN PRI Trunking for IP based System
  • Deployable in all SIP based VoIP networks
  • Connectivity to traditional and wide-spread ISDN PRI network

  • Virtually access trunk connectivity of remote location
  • Connect multiple branch offices over cost-effective IP network
  • Reduce higher inter-network call charges
  • Hop-on and Hop-off calls to and from IP and ISDN PRI network

Key Features

  • Up to 30 simultaneous VoIP to ISDN PRI calls
  • T1/E1 PRI Port with programmable TE/NT modes
  • Deployable in all SIP based VoIP network
  • Register with multiple SIP service providers
  • Simultaneous peer-to-peer and proxy calling
  • ISDN network clock synchronization for error-free communication
  • Fax over IP (T.38 and Pass-Through)
  • VLAN tagging for advanced networking
  • Restrict unwanted calls with list of denied numbers
  • Call details  records of 2000 calls
  • PIN authentication to prevent unauthorized usage
  • Caller ID presentation and restriction
  • Web-based configuration and management



SETU VTEP321 Gateway with 32 VoIP Channels and 1 T1/E1 PRI Port

VoIP Port:

Protocol SIP v2, SDP, RTP (RFC 2833)
Connector Ethernet (RJ 45)
SIP Accounts 32
Echo Cancellation G.168with up to 128ms Tail length
Voice Codecs G.711 (A-law, µ-Law), G.723.1, G.729AB, GSM-FR, GSM-EFR and iLBC Voice Codec


Channels T1- 23B +D , E1- 30B +2D
Connector RJ45
Operational Mode Software Configurable NT/TE modes
Switch Variant T1 RBS - AT&T 5ESS, DMS-100, US Ni2
E1 CAS- ETSI NET5,ITU-T Q.921, ITU-T Q.931
Framing T1 RBS - SF-D4/ESF
E1 CAS – CEPT1 (with/without CRC) with CAS MF 

Power Supply:

Input 5VDC @2A Through External Adaptor
Power Consumption (Typical) 5W (Maximum)


Dimension (WxHxD) 161.50 x 101.25 x 30.30 mm (without side clamps)
Mounting Options Wall Mount ,Table Top and Rack-Mountable
Operating Temperature -10° C to +50° C (14° F to +122° F)

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