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News

Medical Center uses TDMoIP to run voice traffic over distributed gigabit ethernet MAN

RAD Data Communications Ltd : 25 July, 2005  (Company News)
UCSF Medical Center in San Francisco has opted to deploy an evolutionary technology to link all its sites, which include three hospitals as well as 75 offices and clinical locations distributed across three main campuses, onto a single broadband network.
Designed to improve the collaboration and communication among clinical, academic and research programs throughout the medical center and School of Medicine at the University of California, San Francisco, this ambitious 'Unified Network project' relies on a Gigabit Ethernet metropolitan area network to carry heavy data traffic such as medical imaging files. The original network configuration demanded 35 point-to-point T1 lines for delivering voice traffic among the sites.

VoIP Solutions Were a 'Nightmare''With new technologies such as Voice over IP available, we wanted to save the cost of the leased lines by also sending the voice traffic over Gigabit Ethernet,' explains Stephen Sproul, Manager of IT Infrastructure Operations at UCSF Medical Center. Several VoIP solutions were tested, but the experiences were 'a nightmare,' according to Sproul. 'The VoIP equipment didnít work with our legacy equipment,' he continues. 'We had a voice network in place that we wanted to continue using.'

For that reason, Sproul decided to consider TDM over IP technology, an evolutionary solution developed and patented by RAD Data Communications that runs legacy voice traffic over Ethernet-based networks. 'Now, several months later, I am pleased to report that all our voice traffic is running over our high speed Gigabit Ethernet MAN,' Sproul states. 'Performance thus far has been outstanding,' he adds. 'The TDMoIP equipment is working seamlessly with our legacy network.'

Voice, Fax, Modem and Data Without Compromising QualityUCSF Medical Center installed RAD's IPmux-8 TDMoIP gateway at its eight main network locations, with backup units to assure full redundancy. The IPmux series of TDMoIP gateways converts data streams from TDM ports into IP packets for transmission over the packet switched network, while a remote unit converts the packets back to TDM traffic. TDMoIP products take advantage of the IP/Ethernet/MPLS network to deliver voice, fax, modem and data services without compromising traditional PSTN quality.

'We happily disconnected the 35 T1 lines we were using for voice, yielding annual savings approaching $200,000,' claims Sproul. The modular network design enables the IT department to deploy additional communication spans between buildings as needed. Sproul is also pleased to note that, thanks to all parties involved, the Unified Network project came in on time and on budget, and delivered a return on investment in just about eight months.
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