Bytenet
- IT and Telecom solution provider.
- http://www.bytenet.ro

Bureau van Dijk
- Offers specialized telecommunications consultancy including advice on telecom strategy, administration and organization.
- http://www.bvdmc.com/tc/

BOCOM
- Consultant company that designs and analyzes advanced algorithms for digital communication systems.
- http://bocom.se/

Broad Reach Telecommunications Consulting
- Rhode Island-based firm specializing in telecommunications and networking design consulting, RFP development, and project management.
- http://www.broadreachnetworks.com/

The Bennett Group, Inc.
- Acquire, upgrade, or replace a telecommunications system custom selected to fit your specific needs. Design, implement, and manage both traditional voice mail systems and integrated unified messaging systems.
- http://bennettgroup.net/

Bit Tech Limited
- Provides training and consulting for SS7/C7 in UK, Euro and US implementations as well as the use of SS7/C7 in next-generation networks. Information on company, services, and courses.
- http://www.bittech.co.uk/

Butler International
- Deploys a diverse range of switching and transmission systems for both wireless and wireline networks and offers an impressive portfolio of network engineering, installation and test (EF&I) capabilities
- http://www.bluestorm.com