call circuit

call circuit

[′kȯl ‚sər·kət]
(electricity)
Communications circuit between switching points used by traffic forces for transmitting switching instructions.
References in periodicals archive ?
In true aspiring actress fashion, after she graduated college, she hit the open call circuit and landed in a tour of Ferdinand the Bull before being cast as Dora.
Digicel's roceedings came in response to legal action taken by LIME earlier this year when it accused Digicel of blocking LIME's international call circuits.
With the help of early voice-over-IP/PSTN gateways, which supported limited volumes of call circuits, carriers typically used Integrated Services Digital Network (ISDN) or Channel Associated Signaling (CAS) signaling for interconnection to the PSTN.