Compact User Media Gateways

Understanding the differences between the UMG line models


UMG Gateways

The User Media Gateways line began with the UMG 100. Designed to meet the needs of smaller scenarios while still guaranteeing high performance, the UMG 100 is user oriented. It supports 1 E1/T1 link and up to 30 VoIP channels, with registration of up to 2 different SIP accounts. It can be directly connected to the public PSTN network, VoIP links, softswitches, and PBX equipment.

Yet for solutions that require convergence of 1 E1/T1 link and 30 VoIP channels, Khomp has developed UMG 104. The difference between this model and the previous two models is its set of 4 Ethernet Giga ports, consisting of a frontal port for equipment management and 3 rear ports for direct connection to the carriers, allowing for a better performance of the links and, therefore, of the calls .

As for scenarios composed of analog extensions in use, Khomp offers the possibility of a significant reduction in telephony costs, by converting the calls of the system into VoIP calls by means of UMG FXS 240. This model offers 24 FXS ports for connection of extensions and 24 VoIP channels for conversion of calls, as well as two Ethernet Giga ports which allow connection of more than one VoIP carrier.

For the case of hybrid scenarios, which use more than one interface, Khomp has developed UMG Modular 300, which has modular interfaces in order to allow for a telephony composition devised accordingly to the needs of the solution.


UMG Appliances

Leveraging the UMG Modular 300 gateway, Khomp has created the UMG Server Modular and UMG Server Modular PRO appliances that includes a server with a dedicated motherboard for the installation of any Windows or Linux-based telephony solution associated with the UMG Modular 300. This gateway inside is the responsible for converting and processing calls, which makes those appliances ideals platforms for SIP solutions developers looking for a high performance, reliable hardware to run their applications on.

Following the same appliance conception, Khomp also offers UMG Server 104, consisting of a server for processing the desired application integrated to UMG 104, which handles the entire call processing.


Key features

Modular Interfaces

  • FXS interface support
    • Extension numbering plan
    • Dialing timeout
    • Dialing timeout marker
    • Definition of known numbers (Dial Plan)
    • Dialing and ring cadences
    • Internal and external ring tone setting
    • Generation of DTMF or FSK caller IDs
    • Flash validation time
    • Operations for extensions
      • Call waiting
      • Assisted transfer
      • Blind transfer
      • Alternate call answering


  • FXO interface support
    • Caller ID detection
    • Line impedance
    • Blocking collect calls
    • Algorithm for forced hang up of calls received through FXO


  • GSM interface support
    • SMS receipt, confirmation, and error notifications
    • SMS sending API
    • Cyclic allocation of GSM channels


  • E1/T1 link support
    • Clock setting
    • CRC4
    • Channel allocation algorithm (first free and balanced)
    • Channel allocation sorting
    • Definition of known numbers (Dial Plan)
    • ISDN advanced settings
    • R2 advanced settings
    • R2 collect call blocking through double answering
    • ISDN collect call blocking through signaling


VoIP features

  • Creation of VoIP accounts with or without logging
  • Codecs G711A, G711U, G729A
  • Network port selection for SIP and RTP per VoIP account
  • SIP and RTP over TCP
  • Keep Alive support (SIP OPTIONS)
  • Option to ignore the source port
  • Use destination number through URI
  • Q.850 Cause Report
  • DTMF sending mode selection
  • Fax T-38 and pass-through support
  • Echo canceling
    • Standard filter and dual filter
    • Tail-length adjustment up to 128 ms


Smart modular routing

  • Route selection by prefix
  • Route selection by regular expressions
  • Modification of destination and source number
  • Imposing of the codec and the destination profile along the route with VoIP output
  • Route failover
  • Use of the “Display name” as the caller ID


Other features

  • Simplified web configuration
  • HTTP or HTTPS access
  • Single step configuration wizard
  • Built-in diagnostics tools
  • Line volume setting
  • DTMF suppression
  • Customizable CDR
  • SNMP Support


Access here the complete comparative table between the products of the UMG line.

You must login to access the Restricted Area.