- 3-Com 18 products
- Aastra 8 products
- Abrivo / X Blue Networks 4 products
- Altigen 12 products
- Area Code Strips 10 products
- AT&T / Lucent / Avaya 372 products
- Atlas 14 products
- BBS / Plexus 2 products
- Bellsouth 10 products
- Cisco / Linksys 2 products
- Comdial / Vertical 164 products
- Cortelco 32 products
- ECI 8 products
- eON 8 products
- Ericsson 8 products
- ESI 28 products
- Executone / Isoetec 62 products
- EZ-Elite 8 products
- Fujitsu 52 products
- GE 8 products
- Harris Lanier 18 products
- Hitachi 24 products
- Inn Touch 16 products
- Intecom 2 products
- Intertel 70 products
- Ipitomy 2 products
- Iwatsu 82 products
- Macrotel 34 products
- Mitel 136 products
- NEC 212 products
- No-Image 81 products
- Nortel / Northern Telecom 104 products
- Northcom 4 products
- Pacazo / Dash 4 products
- Panasonic 226 products
- PCS Digital 11 products
- Premier 40 products
- RCA 4 products
- Royale 8 products
- Salta 4 products
- Samsung 94 products
- Scitec 22 products
- Siemens / Rolm 72 products
- Southwestern Bell 6 products
- Sprint / Qwest 22 products
- SRX 16 products
- Sun Moon Stars 10 products
- Tadiran 22 products
- Teledex 69 products
- Telematrix 64 products
- Telrad 36 products
- Teltronics 4 products
- TIE / Nitsuko 126 products
- TMC 4 products
- Tone Commander 14 products
- Toshiba / Teleco 86 products
- TransTel 4 products
- Trillium 42 products
- Vodavi 147 products
- Walker 22 products
- Win 28 products