Here's what some of our customers have to say about us.
"We have purchased several PXSe devices to provide an interface to railroad locomotive equipment. This equipment employs a HDLC protocol that is fully satisfied by the PXSe. Additionaly, data is easily exchanged with the PXSe using it's data tunneling functionality. The PXSe has proved to be a reliable and functional device that has saved us many man hours in development time."
"DTS Ltd have dealt with Advanced Relay since 2000, during which time they have provided interfaces for Real Time Defense Systems. Their products have been used since then in several projects giving a high availability to our developments.
"We have used the PXS in our Light Command and Control application. The implementation process was really straightforward.
"We can confidently recommend Advanced Relay as a solid and reliable supplier, and experts in their field."
"[The CDR download with the PXSs] is working fine; I am not aware of any data loss during transfer which means it's working perfectly."
"We implemented the last PXS boxes in Barcelona, Milan, Dusseldorf and Frankfurt... We were happy to implement the PXS very quickly without any issue. As far as I know we are currently downloading files using PXS boxes without any issue."
"... the fix you sent worked perfectly and the Zurich box has been working fine ever since.
"Even better news is that the 4 boxes you sent over the weekend arrived Monday morning and I had them configured and on their way around Europe by that afternoon... and after a very hectic day yesterday, all 9 GSP switches are now using the PXS boxes and our old X25 capture software is turned off and ready to be decommissioned.
"So a big thank you for getting the last batch of boxes here so quickly and for all the help you've given me in setting them up."
"Our testing has gone extremely well and your unit has functioned flawlessly. We have been able to test our communication interface at the full operating speed of 64000 bps with very few errors (likely just noise on the line).
We are very impressed with the quality of the device and the stability it has shown to date."
"The new driver works like a charm. Thanks for the quick response once the problem was identified. I wish all software providers could be as easy to work with as Advanced Relay."
"The AFTEIU program worked perfectly the very first time!
Thanks again for doing yet another perfect project - You're making my job much easier."
The Satcom division of Linkabit Wireless (formerly Titan Corporation) delivered an unusual private satellite system to a large government bank in Thailand. This satellite system supported a mix of voice, data, fax, and modem traffic. The decision was made to have all services share a general pool of transponder bandwidth. Data was implemented using switched physical circuits like all the other services. All data traffic (teller transactions, MIS database transactions, and EOD database file transfers) is embedded in X.25 switched virtual circuits on 32 kbps switched SCPC (single carrier per channel) physical satellite links. The data network had a star topology with 500 remote sites, supported by a pool of 32 satellite modems at the central hub. The customer wanted a single connection point for the satellite network into its hub LAN via a router. A separate router supports each remote site.
"Titan was required to develop an X.25 switch to support this configuration. Advanced Relay was chosen to supply the network hardware and protocol stacks. The switch Titan developed uses a high-end PC running NT. It has 2 high-speed serial ports and 32 low speed serial ports on a mix of 1x 2-line PCI and 4x8-line ISA cards. One high-speed port connects to the collocated router at the hub supporting continuos 1 Mbps LAPB/X.25 connection with 4095 SVCs. The 32 low speed ports are each connected to one of Titan's 32 kbps satellite modems, which can connect to any of the 500 remote sites on demand. The hardware and software from Advanced Relay (ARC) was very effective in satisfying our needs for flexibility, reliability, and cost effectiveness. The support we received from ARC, both technically and logistically, were important in our meeting our customers' requirements. In addition, ARC made custom modifications to their protocol stack to support Titan's call setup protocol between the switch and the modems, which helped us meet our delivery schedule."
"In the spring of this year (2000), ALSTOM Signaling subcontracted with Advanced Relay Corporation (ARC) to develop a custom implementation of their LayGO® software drivers. These drivers had to operate in Windows NT 4.0 and drive a pair of PCMCIA serial communication cards from Sealevel Systems. The laptop computer on which the drivers were to be run had to interface with existing railroad control equipment of a relatively early vintage.
"The required implementation was a completely non-standard Monosynchronous communication protocol operating in three primary modes: master, slave and non-obtrusive monitor. It featured non-standard prefix, suffix, word length, checksum, etc. In addition, many of the protocol specifications were under-documented. Despite the fact that several key specifications were unknown initially and that this was clearly a one-time implementation, ARC agreed to undertake this task while ALSTOM engineers reverse-engineered the communications protocol and provided answers to ARC as development progressed.
"ARC engineers proved to be extremely competent and flexible. Over several months, ALSTOM engineers worked closely with ARC, and ARC successfully produced an excellent set of software drivers. ARC personnel provided us with quick and accurate responses. These custom drivers met or exceeded all of our expectations."