With the rapid growth of fiber network deployments, operators around the world have started to actively promote POTS plain old phone system out, and push the migration of the users on legacy PSTN (including 30B+D lines) to IMS platforms.
In the context of the 30B+D(ISDN) migration, existing legacy digital PABX (e.g. Nortel, Siemens) can only connect to telecom or mobile IMS platforms via SIP trunks, and these systems, which have been in use for more than 5 to 10 years, usually only support ISDN 30B+D interfaces. In addition, when business users apply for external line expansion, an increasing number of operators will only provide SIP trunking resources.
For operators, ITSP, and system integrators, this is a challenge but also brings the opportunity to smoothly transition original enterprise telephony systems toward unified communications.
With 1/2/4 E1 interfaces, 512 SIP trunk accounts, dual power supply, and dual network port redundancy, New Rock Digital Trunk Gateway OM1000-TE, can provide a reliable solution for 30B+D devices to access operators' IMS platforms.

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Solution Value
  • Support 30B+D convert

    · Place the OM1000-TE digital trunk gateway in the old 30B+D telephone system to convert the 30B+D protocol to SIP trunk

  • Support E1/T1 interface

    · The gateway's E1/T1 interface connects to the enterprise telephone system, and the network port connects to the local area network router 

  • Keep original numbers

    · The telecom operator will transfer the telephone numbers from the original PSTN network to the IMS platform

  • Smooth transformation

    · Incoming calls will be transmitted from the IMS platform to the enterprise LAN through the IP network and restored to 30B+D signals by the digital trunk gateway, then forwarded to the enterprise telephone system.

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