Below is a list of VoIP / telecommunication service providers in Texas:

A DC
817-424-9717
536 Silicon Dr
Southlake TX 76092-9020

AMC
254-752-1600
Waco TX 76701

A T & T Cellular
281-597-1628
12303 Westheimer Rd
Houston TX 77077-6003

A T & T Wireless
281-597-1628
12303 Westheimer Rd
Houston TX 77077-6003

Accurate Comm
281-955-5092
13815 Bella Dr
Cypress TX 77429-2594

Advanced Communication Technologies
806-356-0095
Amarillo TX 79101

Advanced Communications Technologies
806-356-0095
4300 Teckla Blvd
Amarillo TX 79109-5494

Akers Telecommunications Inc
281-651-1181
19627 Interstate 45
Spring TX 77388-6030

Allstar Communications Inc
972-988-9799
PO Box 1575
Cleburne TX 76033-1575

Avion Technologies
281-829-2777
19034 Appletree Hill Ln
Houston TX 77084-5596

CSD Relay
806-788-8940
4310 Iola Ave
Lubbock TX 79407

Capital Telecommunications Inc
936-699-3784
1609 S Chestnut St
Lufkin TX 75901-5504

Cellular Point
281-655-0033
16718 Stuebner Airline & L
Tomball TX 77375

Cellular Point
281-363-0030
25701 Interstate 45 Ste 8
Spring TX 77380-3523

Channel Services In
806-457-1299
3900 S Georgia St
Amarillo TX 79109-4837

Cingular Wireless Llc
281-597-1628
12303 Westheimer Rd
Houston TX 77077-6003

Consolidated Communications
936-539-7248
Conroe TX 77301

Headset Experts
713-780-1157
2909 Hillcroft St
Houston TX 77057-5847

Hite Electronic Sale
817-483-7077
7990 Dick Price Rd
Kennedale TX 76060

Houston Telephone
281-485-3070
Pearland TX 77581

Plantronics Headsets
713-780-1157
2909 Hillcroft St Ste 650
Houston TX 77057-5844

Platinum Telecommunications Service Incorporated
936-931-5200
3197 Orange St
Waller TX 77484-8294

Postal Centers of Houston
281-484-0334
10592 Fuqua St Ste A
Houston TX 77089-1444

Ppf
281-679-5353
12288 Westheimer Rd
Houston TX 77077-6054

Professional Answering Service & Call Center
940-720-2550
1401 Holliday St Ste 406
Wichita Falls TX 76301-7144

Sizemore Telecom Services Services
713-944-6999
9001 Airport Blvd
Houston TX 77061-3474

Sprint Pcs
830-298-7745
Del Rio TX 78840

Srs Group the
936-273-7774
Conroe TX 77301

Superior Communications
713-783-6049
2825 Wilcrest Dr Ste 111
Houston TX 77042-3358

Superior Communications
713-783-6063
2825 Wilcrest Dr Ste 111
Houston TX 77042-3358

Superior Telephone Service
936-539-2255
Conroe TX 77301

Tag Electric Co
281-376-6700
16422 Hufsmith Kohrville R
Tomball TX 77375

Tag Electric Co
281-376-6700
16422 Huffsmith Kohrville
Houston TX 77070-1512

Taylor Telcomm Inc
254-435-2176
Meridian
Meridian TX 76665

Tel-Del Services
936-231-2000
Conroe TX 77302

Tele-Communication Inc
713-780-1157
2909 Hillcroft St Ste 650
Houston TX 77057-5844

Telpro Technology Inc A Link.Net Group Co
281-893-9711
14405 Walters Rd
Houston TX 77014-1337

The Fredrickson Law Firm
281-367-8500
Spring TX 77380

The Srs Group
936-273-7774
Conroe TX 77302

T-Mobile
972-315-6007
2325 S Stemmons Fwy Ste 304
Lewisville TX 75067-2313

T-Mobile
713-523-9131
Houston TX 77019