Sonus Networks announced several enhancements to its Open Services Architecture (OSA) designed to enable a new concept of Network Border Switching. Sonus said the latest Release 5.1 of the company's GSX9000 Open Services Switch and Insignus Softswitch eliminates the need for multiple partial solutions by providing basic network border switch functionality, including:
- Network Address Translation (NAT) and topology hiding
- Access control via pinhole firewall
- Denial of Service (DoS) protection
- Bandwidth and QoS theft protection
- Signaling-based admission control (SIP or H.323)
- SIP and H.323 Proxy, back-to-back and interworking functions
The network border switching capabilities use the Insignus Softswitch to enable carriers to control firewall pinholes and routing with options based on IP addresses as well as call-related information such as calling subscriber, called subscriber, applicable calling plan and others.
Sonus also said its solution is able to resolve the media incompatibilities that can arise in interconnecting IP devices, such as different codecs, different voice packet sizes and protocol incompatibilities (raw fax vs. T.38, DTMF vs. RFC2833). It also provides support for SIP-T, which carriers typically use when peering with another carrier via IP, allowing end-to-end call signaling via embedded ISUP information.
http://www.sonusnet.com
