- AT&T: 21070, 262, 272, 412, 422, 4952, 612, 622, 712, 722, 732, 742, 752, 812, 822, 830, 832, 842, 843, 853, 854, 874, 902, 912, 922, 944, 945, 952, 953, 954, 955, 962, 972, 964, 982, 992, 993, SIGNATURE, FT483, FT484, 974, 984, 1040, 1070, 1080 , 90240, 90529, 90889, 2462, E2562, E2662, EP5962, ML17929, 992, 993
- .
- Brother Quatro: 412
- .
- Bell: 223, 232, 259, 261, 268, 367, 470, 52905, Sonecor 412, 412CID, 4900, BE5200, BE5300, Techline 420
- .
- Casio: SI460, SA400, plus all other Casio Models
- .
- Cortelco: 2720, 2740, 4125, 412541TP127S, TP127S, plus all other Cortelco models
- .
- Epic: ET4000
- .
- Execufone: ITC-420, 420i
- .
- GE: 187, 2-9315-A, 2-9318, 2-9435-A -B -C, 2-9436-A, 2-9438-A, 2-9450-A -B -C -D -E -F, 2-9439-A to -EGL, 2-9451A, 2-9481, 2-9487GE2-A, 2-9488, 2-9638-A, 2-9975, 2-9488GE2-A, GE 2-9638-A, GE 2-9975, GE 25403, GE 25404, plus all other GE models
- .
- Pac Bell: 261, FE5350
- .
IBM: 412, 412CID, 4900
.
Northern Telecom: Unity
.
Phonemate: PMG-4600, PMG-2400, plus other models
.
Panasonic: KX-T3110, 3120, 3122, 3135, 3145, 3155, 3160, 3165, 3170, 3175, 3280, 3980-H, 3980-R7, 3981, KX-TC930, KX-TS20, KX-TS21, KX-TS25, KX-TS27, KX-TS208, VA-8400, KX-T3110, KX-T3120, KX-T3122, KX-T3135, KX-T3145, KX-T3155,
KX-T3160, KX-T3165, KX-T3170, KX-T3175, KX-T3280, KX-T3281, KX-T3980-H,
KX-T3980-R7, KX-T3981, KX-TC930, KX-TG2000, KX-TG2720, KX-TG2730, KX-TG2740,
KX-TG4000, KXTG4000B, KXTG2000B, KX-TG4500, KX-TG5480, KX-TG6500, KX-TG6502, KX-TG6700, KX-TG6702,
KX-TG650, KX-TGA200, KX-TGA400, KX-TGA420, KX-TGA650, KX-TGA670, KX-TS20,
KX-TS21, KX-TS25, KX-TS27, KX-TS208, KX-TS3282, KX-TS4100, KX-TS4200,
KX-TS4300, VA-8400, PQLV30024ZB, plus all other Panasonic models.
Qwest: NSQ412
.
Radio Shack: 206, 208, 209, 210, 212, 411, 412, 612, 43-373D, 43-430, 43-642, ET-180, 43-470, ET-184, ET-192, ET-193, 43-622, 43-469 , 1710, 1753, plus all other Radio shack models
.
RCA: 25403 RCA, 25404RE3A, 25413RE3, 25414RE3A, 25415RE3A, H5400RE3, 25423, RCA 25424, RCA 25425, RCA 25450, plus all other RCA models
Sony: IT-M804
.
SBC: 2105, 4000, SBC 2105, SBC 4000, SBC 410, SBC 420
.
Southwestern Bell: FT325, FT360, FT365BL FT383, FT412, FT483, FT484
.
Sprint/Radio Shack: SP-702 / 43-5702, SP-705
.
Starplus II: HAC2605, HAC2606
.
TMC: ET4000
.
TT Systems: 4012, 412, 412CID, 4900, 4300, 5100, 5200, 5300, 7993
.
Uniden: UB-420, Uniden 420
.
Verizon: NSQ412
.
Vtech: 4121
.