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| AFC | AG COM | Agilent | Aglient |
| Airpax | AIRSYS | Alcatel-Lucent | Alcatel-Newbridge |
| Allgon | ALLIED TELESYN | Alpha | Amphenol Antel |
| Anderson Power Products | Andrew | Anritsu | Antec |
| APC | Aria Technologies | Avaya | Aviat |
| Axell | B & B Electronics | Badger | Bayly |
| Belden | Benning | BERK-TEK | Black Box |
| Brady | Bud Industries | Burndy | Bussmann |
| C&D | Calix | Cambium | Carlson Wireless |
| Carrier Access | Ceragon | Charles Industries | Chatsworth |
| Ciena | Cisco | Clearcomm | Coastcom |
| Commscope | Communication Components, Inc. | CSS | Cypress |
| Dantel | DATUM | DEC | Delta Electronics |
| Digital Lightwave | Ditech | Dragonwave | DSC |
| E/O Networks | East Penn | Eastern Research | ECI Tadrian |
| Eltek | Emerson Network Power | Enersys | Ericsson |
| Eupen | Exalt | Extreme | Filtronic |
| Flash Technologies | Fluke | Force 10 | Foundry |
| Fujitsu | Gabriel Electronics | Garettcom | GE Energy |
| GE MDS | Generac | Glenayre | GNB |
| GoDigital | GPS Networking | Harris | HC Power |
| Honeywell | Huawei | Hubbel | Huber-Suhner |
| IBM Systems | ICBS | IMCI | Ixia |
| JDSU/Acterna | JMA Wireless | Juniper | Kathrein |
| KMW | LAIRD | Lamarche | Larus |
| Lenkurt | Lineage Power | Loop Telecom | Lucent |
| M2 Global | Magnetek | Marconi | MAXRAD |
| Meanwell | MECA | Metal-Tech Partners | MGE UPS Systems |
| Micom | Mini Circuits | Motorola | MRV |
| MTI Wireless Edge LTD | Multi-Tech | Narda | NEC |
| Nera, Inc. | Newmar | Newton | Next Level |
| Nicollet | Nokia | Norantel | Nortel |
| Northern Technologies | Northstar | Octel | Onyx |
| Ortronics | Pairgain | Panduit | Paragon |
| Pasternack | PCTEL | PECO II | Polycom |
| Pomona | Positron | Power Conversion Products | Power One |
| Powerware | Powerwave | Praxsym | Premisys |
| Proxim | Pulsecomm | Purcell Systems | Puregas |
| Pylon | Racal | RAD Data | Radiowaves |
| Raven | Raychem | Rayovac | RD Microwaves |
| Redback | Reltec | RF Industries | RFI |
| Riverstone | RLH | Rockwell | Rohde & Schwarz |
| Rotron | Sabre | Saft Power Systems | Sage Instruments |
| Scientific Atlantic | Seiscor | Siecor | Siemens |
| Siemon | Sinclair Technologies | Solid | Sonus Networks |
| Spectrian | Square D | Stratex | STRATOS |
| Sumitomo | Sun Microsystems | Sycamore | Symmetricom |
| Tadiran | T-Com | TDI Power | TE Connectivity |
| Tekelec | Tektronix | Telco | Telect |
| Telenetics | Tellabs | Teltrend | Terayon |
| Tollgrade Communications | Topaz | TPS | Trango |
| Trilogy | Trimm | Tripplite | Turin |
| Unipower | Valcom | Verso/Verilink | Wescom |
| Westell | Westronic Systems | Wilmore | Wireless Solutions |
| XEL | Zhone |