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Core Stor Ip Recording V1


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Core Stor Ip Recording V1

  1. 1. CoreStor IP Recording Voice over IP is a whole new architecture which presents several unique challenges and opportunities for recording solutions. The functional components can distributed around IP networks that are unlike traditional PBX or switch environments in that there may be no centralised point of capture of the audio such as at the MDF (Main Distribution Frame) in traditional technology. Nevertheless, single points of capture can be established using networking devices. In any case capture is effected by targeting a specific series of IP addresses across the network. Delma specialises in IP telephony interfaces to a wide variety of the worlds PBX's and voice switches, building world leading technology into recording systems. Delma has developed a IP recording solution that can capture IP traffic of all kinds and not simply VoIP packets. Needless to say voice traffic is the most common requirement in IP recording. The Solution The CorStor IP recording solution fits seamlessly into the current product portfolio and philosophies. Delma is able to provide one solution, including mixed telephony, in one single chassis. In line with the leading digital interface technology, Delma will also decode additional call data such as the called and calling party numbers directly from the network, without the need for additional CTI integration. Configuration of the system is simple and effected by entry of the IP addresses and ports which carry the data packets for capture. There are a variety of methods used by switch manufacturers and recording vendors to ensure that the packets of interest appear on network ports which will be monitored. These include:- • Span ports • Port mirroring • Conferencing or other dedicated connectors • Custom gateways Ver 1.00
  2. 2. IP recording via a Span Port Switch manufacturers often provide a Span Port which carries a clone of the traffic being transmitted to and received from IP telephones. This port was originally intended for maintenance and support purposes but was soon latched onto by the recording community as a good place to capture IP traffic for recording purposes. As in all cases IP traffic is received in the recorder using a standard network card connected to a network which includes the SPAN port. In an ideal situation all IP addresses to be captured would be in a single VLAN which reduces the work of the recorder when sifting through network traffic searching for the IP packets of interest. When there is a requirement for remote offices to be recorded at a central location, Remote Spanning may be used. The spanning possibilities rely on the switch manufacturer and not all vendors will have the same functionality. Please check the switch vendor for these spanning options. IP recording via Port Mirroring Very commonly all of the IP telephone extensions serviced by a PBX or IP switch are connected to a multi-port network switch. Each extension occupies a single network socket in the switch and each telephone has its own individual IP address. It is not possible to target the individual ports on the network switch and this is overcome by mirroring or cloning the IP traffic onto a series of ports on the network switch which are dedicated to the recording activity. Thereafter the process of recording using a standard Network Interface card in the recorder is the same as before. Care must be taken to ensure that network switches to be used will support Port Mirroring IP recording via Conferencing Conferencing may be used in low volume recording operations. As with traditional telephone conferencing, calls of interest may be conferenced to a dedicated extension which is actually the IP Recorder rather than a telephone handset. The recorder is configured to accept calls in the same way as a conferenced phone. Thereafter the process of recording using a standard Ver 1.00
  3. 3. Network Interface card in the recorder is the same as before. Recording at a conference port must be conducted carefully if the sense of stereo calls is to be preserved. i.e. both the calling and called party are sent in a single stream to the conference port. The recorder has to perform additional analysis to discover the sending and receiving IP data. IP recording via Custom Gateways Custom Gateway are to all intents and purposes a combination of conferencing and port-mirroring. A switch vendor will provide a gateway comprising of a single or multiple IP ports. The packets of interest appear on these ports and can be captured using a hub or mirrored on a network switch. Thereafter the process of recording using a standard Network Interface card in the recorder is the same as before. Recording at a gateway must be conducted carefully if the sense of stereo calls is to be preserved. i.e. both the calling and called party may sent in a single stream to the gateway port. The recorder may have to perform additional analysis to discover the sending and receiving IP data. The IP recording solution is not able to record IP traffic when the IPSec (IP Security Protocol) protocol or any other audio encryption is in use. When recording such IP solutions, trunk side recording is one of the alternatives if there is no access to the encryption scheme. CoreStor can be manipulated to support encrypted schemes. Recording Scenarios In addition to recording traditional PBXs which support VoIP, call centres, dealer boards or trunk lines, CoreStor is able to record calls over IP from any source which handles packets in a supported protocol (H323, RTP, SIP etc). Designed for reliability and adaptability, all CoreStor solutions are built upon open standards technology and “off-the-shelf” hardware for simple maintenance, integrations and expandability. There is no doubt that IP recording is an essential element in the future of telephony. Ver 1.00
  4. 4. Licensing IP Licensing is effected using license code entry into the configuration profile. This profile contains the licenses for the number of lP channels. The CoreStor software treats every IP channel as any other telephony channel. Hardware Formats CoreStor is a software recording solution and as such is designed to run on standard computer hardware. The system is currently supplied to run on servers of P4 processor or higher and running MicroSoft’s XP Professional or Windows Server software. Load balancing and high channel recording configurations can be achieved by installation of the recording engine component (a standard “service” and the replay and administration client on separate servers/PCs Replay and Administration Client software CoreStor has a full featured administration, replay and analysis client application with the following features:- • System configuration data manager • System status displays • System user and security profile management • Access to system control of CoreStor services • Archive configuration and operation • Recording schedule configuration and operation • Recording and monitoring node set-up and configuration • Collection of recordings from other non CoreStor active nodes for centralised storage under CoreStor • Search, review, analysis and replay/reconstruction of stored calls including optional Word Spotting and Voiceprint Analysis with speaker identification. • Multi-channel call review and replay to facilitate incident analysis • Optional target tracking and mapping add-ons Replay screen showing multiple channels Ver 1.00
  5. 5. Typical schematic CoreStor is developed and distributed under license by:- Delma MSS Ltd, Newhouse Farm, Northington, Alresford, Hampshire SO24 9UB Tel: +44 1962 735859 Fax: +44 1962 735890 Email: Ver 1.00