Voice over IP and applications
The rapid spread of IP applications and their usage by residential customers too presents network operators
with huge challenges regarding the telecommunications network’s structures. However, there is also enormous untapped potential for network operators to set themselves apart from the competition.
Voice over IP and applications
IP multmedia subsystem (IMS)/softswitch
Thanks to our IMS solutions for modern and efficient telecommunications networks, our customers can implement a scalable and comprehensive full IP infrastructure with interconnections in fixed/mobile telephone networks.
Session border controller
An SBC is used at network boundaries and links internal and external networks. The SBC analyses the various data streams and, depending on the configuration, intervenes in the different data streams (signalling or media).
Intelligent networks (IN)
An IN platform facilititates the provision of new services, which optimise internal processes or complement a customer’s own portfolio.
VoIP monitoring
Should a malfunction occur, a lack of transparency in complex VoIP networks makes troubleshooting processes lengthy and costly. VoIP monitoring provides full transparency in your VoIP network.
Voice gateways and routers
Syserso Networks offers an end-to-end solution for corporate customers with access, data, voice, and security functions. It’s ideal for ISDN migration, SIP-trunk and hosted-PBX applications.
IP multimedia subsystem (IMS)/softswitch
At the end of the 20th century, fixed network operators started migrating their networks from TDM to IP. By swapping their telephony switches for softswitches and IP gateways, they were able to offer triple play, in other words Voice over IP, internet and IPTV.
Since then, 3GPP and ETSI have defined an advanced telephony architecture called IMS (IP multimedia subsystem). This provides a future-proof solution for various types of network access – 4G and 5G in mobile telephone networks, but also for fixed broadband networks, such as cable, VDSL and optical fibre networks.
In IMS architecture, several layers are identified and separated clearly from one another: media and control, but also applications and services.
The SBC, core network and media layers are responsible for controlling the call and implement multiple security levels (IPv4/IPv6 interworking, subscriber authentication) while the application servers (AS) deliver services of any kind.
Another positive side is that surveillance systems are easy to set up (lawful interception), which is specified by the Federal Network Agency (BNetzA) as part of the technical directive for the German telecommunications surveillance regulation (TR TKÜ). The ordinance requires that alternative carriers, as of a certain number of subscribers (depending on the services, e-mail, voice, fax, mobile telephony etc.), provide a surveillance system of this sort in order to answer any queries from justice departments.
Our partners’ solutions
Cirpack IMS
Cirpack routing policy enabler
Session border controller
An SBC is used on network boundaries and links internal and external networks. The SBC analyses the various data streams and, depending on the configuration, intervenes in the different data streams (signalling or media). In IP-based telecommunication (VoIP), signalling data and voice/image data are transmitted separately.
An SBC fulfils the following functions:
- Security checks and overload protection
- Supports encryption methods (TLS, SRTP)
- Media pinholing and specific enabling of UDP/TCP ports to transmit media streams
- Transcoding between various voice/video codecs
- Conversion and adaption of various signalling protocols, such as SIP to SIP-I (ISUP over SIP)
- Header manipulation, changing the SIP and SDP header, for example telephone number formats (E.164) or adapting parameters
- Ensuring transmission of media data from SIP terminal equipment that can only be reached via network address translation
Our partners’ solutions
Cirpack
AudioCodes Mediant Virtual Edition
Intelligent networks (IN)
The Ocean Service Platform (OSP) makes it easy to provide new, extra services.
These services can help enhance internal processes, such as routing services to cut connection charges, in particular…
- Leased cost routing
- Local number portability
- Enhancing and centralising routing logic across a heterogeneous switching infrastructure
- Real-time, anti-fraud protection when calls are being set up via the voice SafeGuard application
- Easy-to-use voice conference service via the Link Call application
- Dynamic blacklist/whitelist functions to ward off unwanted subscribers
- Putting authorised subscribers through directly via the parental control application
- Providing service numbers in combination with a self-care portal to configure inbound call flows with the Ocean Service Manager application
- Professional call centre solutions
Our partners’ solutions
Telsis Ocean Service Platform (OSP)
VoIP monitoring
VoIP networks are complex and there are many reasons why malfunctions occur. If there’s a malfunction, it’s usually very time consuming to find the cause. Creating and interpreting trace files from multiple nodes is usually necessary and takes a lot of time and experience.
Syserso Networks’ VoIP monitoring solution allows monitoring of VoIP infrastructure across sites. Signalling, registration and VoIP quality problems can also be swiftly detected and put right.
Our partners’ solutions
consistec caplon© VoIP monitoring
Voice gateways and routers
We have an end-to-end solution for SOHOs, SMBs, SMEs, branch networks and POPs. Flexible configuration means that a VoIP-ISDN gateway can be used via xDSL or Ethernet-WAN connections for ISDN migration, as well as for SIP applications with extensive SBC functionalities, including Microsoft Teams applications.
OEM applications, such as SD-WAN, firewalls or virtual PBX can be operated on the voice gateway on an NFV basis – which offers added value to customers.
Our partners’ solutions