| Business | Phone |
| Enterasys Networks Inc 2000 Market St # 1410, Philadelphia 19103 | (215) 239-2200 |
| Future Net Inc 1428 N Broad St, Philadelphia 19121 | (215) 684-3220 |
| Interface Computer Comm Omc 633 S Plymouth Ct # 1a, Philadelphia 19103 | (215) 563-2070 |
| J M Rittenhouse & Co Inc Po Box 18174, Philadelphia 19116 | (215) 522-2500 |
| Micro Media Corp 1600 Market St, Philadelphia 19103 | (215) 557-6400 |
| Terrawarp Technology 1900 Welsh Rd, Philadelphia 19115 | (215) 677-7109 |