Call tracking systems
Call tracking using voice quality measurement probe
Call transfer using session initiation protocol (SIP)
Call waiting feature for a telephone line connected to the...
Call waiting feature for a telephone line connected to the...
Call waiting feature for a telephone line connected to the...
Caller identification and voice/data synchronization for...
Caller information provision
Caller IP address
Caller-controlled routing to non-SIP/non-TEL URI...
CAM based system and method for re-sequencing data packets
Capability addressable network and method therefor
Capability addressable network and method therefor
Capacity allocation for fast path restoration
Capacity allocation for packet data bearers
Capturing user interface switch states
Carrier based call release
Carrier ethernet over DOCSIS
Carrying voice traffic over broad band networks
CAS data processing apparatus of STM-1 interface block