The DIGITALK Session Border Controller greatly simplifies VoIP deployments using the DIGITALK Media Application Server or Intelligent Switch
by providing a single point of interconnect and load balancing across multiple servers. For DIGITALK subscriber applications, such as Broadband
Telephony and IP Virtual Office, the DIGITALK Session Border Controller also fulfils the role of SIP Registrar and SIP Proxy.
Key features of the DIGITALK Session Border Controller are:
- SIP Registrar
- SIP Proxy
- NAT Traversal
- Topology hiding
- Carrier hiding
- Denial of Service detection
- Media relay
- Rate control
- High availability session failover
- High capacity and scalable signalling and media relay
With the DIGITALK Session Border Controller, high capacity and high availability DIGITALK Multiservice Platform VoIP deployments are supported
to enable network operators and service providers to grow with confidence.
Relevant standards include:
- IETF RFC 2976 The SIP INFO Method
- IETF RFC 3261 Session Initiation Protocol
- IETF RFC 3262 Reliability of Provisional Responses in the Session Initiation Protocol (SIP)
- IETF RFC 3263 Location SIP Servers
- IETF RFC 3264 An Offer/Answer Model with the Session Description Protocol
- IETF RFC 3311 The Session Initiation Protocol (SIP) UPDATE Method
- IETF RFC 3323 A Privacy Mechanism for the Session Initiation Protocol (SIP)
- IETF RFC 3325 Private Extensions to SIP for Asserted Identity within Trusted Networks:
- IETF RFC 3326 The Reason Header Field for the Session Initiation Protocol (SIP)
- IETF RFC 3515 The Session Initiation Protocol (SIP) Refer Method
- IETF RFC 3891 The SIP Replaces Header
- IETF RFC 3892 The SIP Referred-By Mechanism
- IETF RFC 3911 The SIP Join Header Field
- IETF RFC 4028 Session Timers in SIP
- IETF RFC 4566 Session Description Protocol
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