Effortless connection between PSTN SS7/TDM and VoIP networks.

  • Connect calls between PSTN and VoIP networks
  • Integrated media gateway, signalling gateway and media gateway controller
  • Compatible with distributed architecture
  • Scalable, carrier-grade
  • Highly interoperable with other system types
  • Supports a wide range of codecs for VoIP, PSTN and wireless
  • Supports a wide range of SS7 and VoIP signalling protocols
  • Sophisticated call routing


The NetBorder SS7 VoIP gateway appliance is a cost-effective, turnkey solution offering from 4 to 256 T1/E1 lines at a single point code, and powerful transcoding capabilities.  Up to 8 T1/E1 lines are available in a 1U box, up to 32 lines in a 2U box.

This product is ideal for applications such as connecting a private branch exchange to the legacy telephone network or providing multiple points of presence to a VoIP network.

The Sangoma SS7 Media Gateway provides full call control routing for SS7 traffic without the need for third party media gateway controllers or protocol converters. Full inter-working is supported across all VoIP and TDM protocols simultaneously, allowing this single multi-protocol TDM to VOIP gateway to be deployed interconnecting differing networks.

The compact, all-in-one design reduces footprint and eliminates the need to source multiple network components to handle media, signalling and routing.

SIGTRAN and MEGACO allows a distributed solution across multiple points of presence where SS7 Interconnect is required.

SNMP & Radius allows monitoring and management of NSG via both of these industry standards.  A GUI provides convenient access to most configuration, monitoring and management functions, while a command line interface provides full access to management functions with a minimum of bandwidth consumption.


  • Alternative carrier solutions
    • Least-cost routing
    • SIP–SS7 interworking
  • ISUP-based caller ring back tone
  • Pre-paid and overseas dialing
  • Multiple points of presence


PSTN Protocols
  • SS7-ISUP: ITU, ANSI, Bellcore, UK, China, India,  SPIROU (France), Russian variants
  • Up to 16 A or F signalling links
  • Up to 16 Originating Point Codes
  • Up to 16 Destination Point Codes
  • Up to 16 Linksets
  • ISUP relay for larger configurations


PSTN Interfaces
  • Up to 32 E1/T1 (960 ports) per server, available in these configurations:
    • 4 E1/T1 in 1U appliance
    • 8 E1/T1 in 1U appliance
    • 16 E1/T1 in 2U appliance
    • 32 E1/T1 in 2U appliance
  • Extend capacity over 960 ports and single server via ISUP relay feature
  • RJ-48 Connectors


VoIP Protocols
  • SIP V2/RFC3261
  • SCTP RFC 2960
  • Megaco/H248
  • H.323


RFC 2246 Transport Layer Security (TLS) for SIP
RFC 2327 Session Description Protocol (SDP)
RFC 2976 SIP Info for digit transmission (#,*) and interworking DTMF
RFC 3261 SIP Basic
RFC 3263 Locating SIP servers for DNS lookup SRV and A records
RFC 3264 SDP Offer/Answer Model
RFC 3265 SIP Subscribe/Notify
RFC 3326 SIP Reason Header
RFC 3578 ISUP Overlap Signaling to SIP
RFC 3711 SRTP (for SIP)
RFC 4028 SIP Session Timer
RFC 4568 SDP Security Descriptions for Media Streams


Codec Transcoding
  • Any-to-any
  • No combination or loading restrictions
  • AMR
  • G.711
  • G.711.1
  • G.722
  • G.722.1
  • G.722.2 (AMR-WR)
  • G.723.1
  • G.726
  • G.729A
  • G.729AB
  • GSM-FR
  • iLBC
  • L8 (Linear 8K)
  • L16 (Linear 16K)
  • T.38 (fax)


Echo Cancellation
  • G.168-2002 with 128ms tail
  • Jitter buffer


DTMF Detection and Generation
  • RFC2833 Tone relay
  • In-band
  • DTMF detection and generation


Call Routing
  • Flexible XML-based dial plan and routing rules
  • Any-to-any routing


Management and Configuration
  • Web GUI
  • Command line interface
  • Call detail records in XML format
  • Detailed logs with user configurable file size and auto-rotation
  • SNMP
  • Radius
  • System backup/restore/copy


  • Per-call tracing (history and/or live)
  • Signalling capture tools
  • Command line interface
  • GUI


Session Management and Billing
  • SIP peer availability polling
  • RTP inactivity monitoring, RTCP
  • CDR generation (RADIUS and text file)


Network Interfaces
  • 2 RJ-45 Ethernet ports
    • 1 for VoIP
    • 1 for management interface
  • 1U Appliance
    • 4 USB ports in the back
  • 2U Appliance
    • 4 USB ports
      • 2 in the front
      • 2 in the back


  • 1 DVI output port


AC Power
  • 250W universal for 1U solution
  • 350W universal for 2U solution
  • DC 400W -48V for 2U (Special Order)


  • 1U : 480.4(W) x 474(D) x 44(H) mm; 19"(W) x 18.7"(D) x 1.7"(H)
  • 2U: 482(W) x 441.6(D) x 88.4(H) mm; 19"(W) x 17.4"(D) x 3.5"(H)


Support and Professional Services
  • Sangoma engineers are here to support your success. Whether you need technical support and software maintenance, training, consultation and installation services, Sangoma can help you. Contact your Sales representative for more information


  • Standard 12-month warranty is included. Additional warranty services available, contact your Sales representative for more information.