The smart VoIP gateway for enterprises

voipXess PRI is able to connect any ISDN telecommunications equipment to any Internet-based next-generation network. With integrated PRI ports and E-SBC functions, the voipXess PRI Gateway is an ideal demarcation point for the interface between enterprises and networks using existent and new technologies.

VoIP & media gateway
With up to eight PRI ports, voipXess PRI allows easy integration of conventional ISDN telecommunications systems into IP-based, next-generation networks. A highly precise ISDN clock and supported, supplementary ISDN services ensure the customarily high ISDN quality of voice, fax and DECT connections.

Built-in ISDN & VoIP protocol conversion, standard SIP normalization and media transcoding enable voipXess PRI to adapt any telecommunications system to any network.

The integrated IP & SIP firewall of voipXess PRI protects the VoIP network. Fraud attacks are detected and automatically blocked.

Calls via the ISDN network in case of IP network failure ensure availability of services. The integrated SIP server of voipXess PRI provides local SIP terminal devices with telephony functions if the cloud PBX becomes temporarily unavailable.

Network Interfaces 1 x 10/100/1000 Mbits Base-T (RJ45)
1 x 10/100 Mbits Base-T (RJ45)
WLAN 802.11b/g/n
ISDN 2 x E1 ports (RJ45)
High precise 5ppm clock
DSS1, Q.931, QSIG-BC
ISDN supplementary services
VoIP SIP (RFC 3261 ff.)
Voice: G.711, G.722, G.729, G.726
Fax: T.38 & G.711
Data: Clear Channel
E-SBC SIP Normalization
Codec translation & transrating
Integrated SIP registrar & location server
Integrated IP & VoIP firewall
Advanced QoS & multilevel call routing
Advice of Charge (AoC) generation
Redundant power supply
Remote provisioning
Low power consumption
Model E1 Concurrent Calls
voipXess PRI 30 1 30
voipXess LCR 30 2 30
voipXess PRI 60 2 60
voipXess LCR 60 4 60
voipXess PRI 120 4 120
voipXess PRI 240 8 240

LinkXess GmbH
Rudower Chaussee 29
12489 Berlin

Phone: +49 30 243 263 20
Fax: +49 30 243 263 29
E-Mail: contact(at)

Privacy Policy

LinkXess GmbH takes the protection of your personal data very seriously and abides strictly with the laws and principles of data protection. This means that you can visit and search our website at any time without providing us with any personal information. However, your IP address, which is signaled automatically, will be saved for strictly technical reasons. Under no circumstances is collected data sold or otherwise distributed to third-parties.

Privacy Policy



With our new mobileXess 5G routers we complete our mobile access router product portfolio mobileXess. With up to 8 integrated 5G channels it provides full voice and data services with a maximum bandwidth of 3.4 Gbits: