Compact User Media Gateways

Understanding the differences between the UMG line models


UMG Gateways

The User Media Gateways line was created to serve small telephony scenarios, converting TDM calls to SIP and vice versa, or routing VoIP calls. They can be directly connected to a public PSTN network, VoIP links, soft switches, and PBX equipment.


E1/T1 <> SIP

Providing Khomp’s high performance guarantee, the UMG 100R was the first model in the line, with 1 E1 link, 30 VoIP channels and the ability to register up to 2 different SIP accounts.

Yet for solutions that require convergence between 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.


FXS <> SIP analog

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.


Hybrid scenarios

For scenarios involving a hybrid option, Khomp designed the UMG Modular 300, which has modular interfaces in order to allow for a telephony composition devised accordingly to the needs of the solution. The choice can be between 3 of the following interfaces: E1, GSM 2G or 3G, FXS and FXO E1/T1, FXS and/or FXO


Purely SIP

To provide equipment that is ideal for purely VoIP scenarios, the µSBC has a capacity for up to 28 simultaneous SIP to SIP calls. It can also route calls between VoIP networks, resolving questions related to transcoding (G.711 and G.729) and survivability, as well as fallback and security with SBC.


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 mother boards dedicated to the installation of any telephony solution based on Windows or Linux), associated with the UMG Modular 300, which is responsible for the conversion and processing of calls. Together, they make up a single platform, ideal for SIP solutions developers looking for a high performance, reliable hardware to run their applications on.


Key features of the UMG line


Routing and Fidelization

– Available on all models

With the intelligent routing and fidelization features, you can route calls to the carriers that offer the best cost-benefit relation for each call, resulting in savings in telephony rates.


Keep Alive (route failover)

– Available on all models

In the case of service interruption with a VoIP carrier when the route failover resource is enabled, the unit ignores the route that the server is using and searches for another compatible route.


Survivability – SAS

– Available on the UMG 104, UMG FXS, and UMG Modular models

In the event that a PBX IP becomes unavailable, the enabled SAS feature in the UMG will assume the basic functions of the IP PBX, such as the completion of outgoing and incoming external calls, calls between extensions and call transferring.


Session Border Controller

– Available on the UMG 104, UMG FXS, and UMG Modular models

The SBC isolates the client’s voice network from the network of the VoIP carrier or the Internet, protecting the communication sessions from interception by third parties for all calls simultaneously. In order to perform this protection of the SIP network, the SBC uses resources such as data encryption, register authorization, call blocking by destination and source to protect against fraud, and masking of topology, among others.



– Available on all models

ZeroTouch Provisioning allows the user to perform the configuration of various UMG gateways without having to access the equipment. You just have to save a file with the default settings in the cloud and, when a new UMG is installed and initialized, it will make a secure connection with the cloud system and automatically establish the settings. Permission to use the cloud service is attained through Khomp Monitor and Insight!, or through a free, simplified portal, which allows the inclusion of only one configuration using a serial number and a security code key.
In addition to automatic configuration, manual provisioning is also made easy with configuration of HTTP, HTTPS and FTP addresses, using the server itself.


Other features

  • Supports FXS, FXO, 3G, E1/T1 (R2 and ISDN) interfaces
  • Creation of VoIP accounts with or without logging
  • G.711A, G.711U, G.729A Codecs
  • Echo canceling for all calls simultaneously
  • Simplified web configuration
  • HTTP or HTTPS access
  • Built-in diagnostics tools
  • DTMF suppression
  • Customizable CDR
  • SNMP Support


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

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