advanced intelligent network (AIN)

See AIN.

• stuttered dial tone
• subcarrier
• submarine cable
• subnet mask
• subnet (subnetwork)
• subnetting
• subnetwork (subnet)
• subrate
• Subrate Digital Loop (SRDL)
• subscriber
• subscriber identification Module (SIM)
• Subscriber Line Carrier-96 (SLC-96)
• subscriber line charge (SLC)
• suit
• superframe
• Super High Frequency (SHF)
• supernetting
• superrate
• superrate
• supervision
• supervision
• suppression
• surface wave
• surge
• surge