Mediatrix ISDN

Mediatrix ISDN SIP gateway

The Mediatrix SIP gateway provides an easy connection to an ISDN line through a SIP interface. The unit is compliant with multiple security protocols ensuring clarity of voice and a full feature-set including T.38 FoIP, fax passthrough, and modem passthrough capabilities.

Models available:

  • 1 BRI (2 voice channels)
  • 2 BRI (4 voice channels)
  • 4 BRI (8 voice channels)
  • 1 PRI (30 voice channels)

IP Telephony Protocol

  • SIP, Multiple SIP Proxy support via DNS SRV, Multiple registrations, SIP over TLS, TCP and UDP. Seamless fallback across redundant servers. Multipple Virtual gateways, PRACK and UPDATE.
  • IPv6 addressing - Most network-related features of the Mediatrix unit receiving and sending packets on the Internet protocol can be used on both IPv4 and IPv6, OCSP (Online Certificate Status Protocol) revocation status verification for TLS links, ANAT grouping in the SD, Media stream may now be on a different network than SIP signalling, Call router automatic routes may now have multiple SIP gateways for sources and destinations.

Voice Processing

  • Vocoders: G.711 (A-law, μ -law), G.723.1a, G.726, G.729a/b, G.168 echo cancellation (64ms), DTMF detection and generation, Carrier tone detection and generation, Silence detection / suppression and Comfort Noise Generation level software adjustable, Configurable dejitter buffer, Configurable tones (dial, ringing, busy), Configurable transmit packet length, RTP/RTCP - RFC 1889, RFC 1890, RFC 2833, RFC 3389.

ISDN Signaling

  • Euro ISDN EDSS-1 / ETSI PRI/NET5, ETS 300 012-1 (ITU-T I.430), ETS 300 402-2 (ITU-T Q.921), ETS 300 403-1/2 (ITU-T Q.931), ETS 300 102-2 (ITU-T Q.931), ETS 300 402-1 (ITU-T Q.921), ETS 300 403-2 (ITU-T Q.931), ETS 300 102-1 (ITU-T Q.931), ISDN speech, audio and data (Fax Gr 4, UDI 64, RDI 64), ECMA-143 (QSIG-BC).

Enhanced Security

  • Compliant with multiple enhanced security protocols offering a rich feature set including: SIP over TLS, SRTP with MIKEY key management protocol (RFC 3830 and 4567) and SDES key management protocol (RFC 4568), X.509 Certificate management. HTTPS for the exchange of Configuration File and web pages, SNMPv3 and TR-069 management protocols. Supported Aunthentication: SHA1, MD5. Supported Key Exchange Mechanism: RSA, Diffie-Hellman., Supported Cyphers:AES (128 and 256 bits), 3DES (168 bits), DES (56 bits), Blowfish (448 bits).

Fax and Modem Support

  • Group 3/Super G3 Fax real-time FoIP over clear channel (G.711), G.726 or T.38 Fax relay (9.6 k, 14.4 k), MODEM tone detection and pass-through over G.711 and G.726.

Call Routing

  • Local switching, Interface hunt groups, Routing Criteria: (Interface, Calling/called party number, Time of day, day of week, date, ISDN bearer capability), Number manipulation functions: (Replace numbers, Add/remove digits, PLAR), Call properties manipulations, SIP header manipulations.


  • Web-based GUI, TFTP, FTP, HTTP/HTTPS configuration up- and download (Auto-provisioning), TFTP, FTP, HTTP/HTTPS firmware upgrade, SNMPv1, v2 and v3 agent (MIB II and private MIB), TR-069 for massive deployments (optional feature available at purchase time), TELNET, SSH,Remote Services activation to purchase service licenses for deployed units, permitting to enable TR-069 feature in the field, TR-104 to permit large provisioning systems to communicate with CPE on private networks, Subscribes services for IMS: Transfer methods and real time media provisioning

QoS, IP Routing, NAT and Firewall

  • TOS/DiffServ, IEEE 802.1p/Q. NAPT/ Firewall, Statefull inspection, Static routes, Source-based routing, IP filtering and Port forwarding, DHCP Client, DHCP Server, PPPoE client, VLAN support.

WAN Connection

  • 1 x 10/100 BaseT Ethernet RJ-45 connector.

Power Supply

  • External 12 Vdc power supply (wall plug or desktop, based on country/area model).


  • Desk mount (horizontal/vertical) or Wall mount.


  • Height: 4.9 cm (1.9 in.) approx., Width: 22 cm (8.7 in.) approx., Depth: 17.6 cm (6.9 in.) approx.,Weight: 545 g (0.75 lb.) approx.



Configuration guide




T: 01727 848186