call sip
RSS call sipTowards Stateless Core: Improving SIP Proxy Scalability
White Paper This standard uses the Session Initiation Protocol (SIP) to setup and teardown multimedia sessions through a potentially large chain of proxies. Moreover, SIP standard allows proxies decide when to store transaction information on a per request basis. [11 Jul 2008]
A Framework for Traffic Engineering in a SIP-Over-MPLS Based Network
White Paper A network architecture that adopts SIP protocol as signaling to set up a call and MPLS as a core network forwarding mechanism is identified. In this paper, a network based on SIP (Session Initiation Protocol) over MPLS (Multi-Protocol Label... [10 Jul 2008]
Managing Call Flows Using SIP
White Paper Those procedures are known as signaling, and the protocol described in this paper, known as the Session Initiation Protocol, or SIP, is a signaling protocol defined by the Internet Engineering Task Force (IETF). [03 Jul 2008]
Managing Call Flows Using SIP
White Paper Those procedures are known as signaling, and the protocol described in this paper, known as the Session Initiation Protocol, or SIP, is a signaling protocol defined by the Internet Engineering Task Force (IETF). [03 Jul 2008]
SIP Based Call Centres
White Paper This is a White paper exploring the aspects of voice over IP protocol and their application to call centres. [03 Jul 2008]
Real-Time Billing in SIP
White Paper Though interconnecting a SIP call leg with the legacy phone system (Public Switched Telephone Network - PSTN) is well defined and communication flows seamlessly, the billing model regnant in the telephony world does not mesh quite so naturally... [03 Jul 2008]
Reliable IP Telephony Applications With SIP Using RSerPool
White Paper This paper shows how requirements for high-availability services in IP telephony environments can be met by running the call-control protocol SIP with the RSerPool architecture. The paper shows how SIP entities map to the RSerPool architecture and... [03 Jul 2008]
VoIP Vendors Pass SIP Test
White Paper SIP is a relative youngster compared with the ITU's H.323 specification for voice-over-IP call control, and to achieve this level of interoperability so quickly via SIP is impressive. It was found that SIP-based basic interoperability works, and... [03 Jul 2008]
Interworking Between SIP and MPEG-4 DMIF for Heterogeneous IP Video Conferencing
White Paper In particular, it describes the design and implementation of an experimental system for interworking between IETF SIP (Session Initiation Protocol) and ISO MPEG-4 DMIF (Delivery Multimedia Integration Framework) session and call control signaling... [03 Jul 2008]
Carrier Softswitching — Getting Beyond the Hype to Deployable Solutions
White Paper Unlike other protocols used in the development of Softswitch architectures such as Media Gateway Control Protocol (MGCP), MEGACO/H.248, and H.323, all of which are session and device control protocols, SIP simplifies the network through the... [03 Jul 2008]
SIP: Session Initiation Protocol
White Paper SIP makes use of elements called proxy servers to help route requests to the user's current location, authenticate and authorize users for services, implement provider call-routing policies, and provide features to users. [03 Jul 2008]
Credit Union Simplifies With SIP-Based IP PBX Communications Solution
White Paper It also made this decision to take advantage of CUIC's session initiation protocol (SIP) support. SIP is an emerging standard for IP telephony designed as a simpler, more open and flexible alternative to its predecessor, H.323 - still used today by... [03 Jul 2008]
Implementing Media Gateway Control Protocols
White Paper SIP and H.323 essentially handle call setup, connect, and teardown, SDP handles session descriptions and RTP/RTCP handles real-time media transport. In IP centric networks, the well-known multimedia over IP protocols have their work carefully... [03 Jul 2008]
SIP Testing With Spectra2
White Paper Spectra2 provides comprehensive analysis tools such as call trace, message filtering, and message decode. Spectra2 is a hardware and software testing solution for testing VoIP and converged networks. From one integrated product you can easily... [03 Jul 2008]
Hierarchical Inter-CMS Architecture Using Standalone SIP Route Proxy
White Paper A hierarchical inter-CMS architecture using a standalone SIP route proxy enables MSOs to avoid the unnecessary PSTN interconnection costs and gives them flexibility to deploy CMSs regionally in a way that best utilizes their network resources. [13 Jun 2008]
