- Backbone Network
- Backhaul
- Band
- Band-pass filter
- Band-pass limiter
- Bandwidth
- Bandwidth Time Product (BT)
- Barge call
- Base Station (BS)
- Base Station Controller (BSC)
- Base Station Controller Interface (BSCI)
- Base Station Identity Code (BSIC)
- Base Station Subsystem (BSS)
- Base Transceiver Station (BTS)
- Base Transceiver Station Equipment (BTSE)
- Baseband
- Baseband signaling
- Basic Fee
- Basic Trading Area (BTA)
- Battery indicator
- Battery meter/Dedicated Baterry meter
- Baud
- Baud rate
- Baudot
- BBSIG
- BCH (Broadcast Channel)
- Bell Operating Company (BOC)
- Bent pipe technology
- Bi-directional antenna
- Bidding credit
- Binary Phase Shift Keying (BPSK)
- Bird
- BIT
- Bit Error Rate Tester (BERT)
- Bit Error Ratio (BER)
- Bit interval
- Bit per second (bps)
- Block
- Block Error Rate (BLER)
- Blocking
- Blocking probability
- Bluetooth
- Booster
- Bose Chaudhuri-Hocquenghem code (BCH code)
- Broadband
- Broadband PCS
- Broadcast
- Broadcast Control Channel (BCCH)
- Build-to-suit
- Built-in fraud and cloning protection
- Built-in mini-browser
- Bundling
- Burst
- Burst transmission
- Bus
- Busy hour
- Busy tone
- Byte
B
