Hi, Prateek,
That could well be. It is very parallel to what happened in the US much earlier.
Long before there was any direct dialing of intercity calls by subscribers (in fact, in some cases before dial service for local calls), there was a change from the practice of "booking" intercity calls to the practice of the subscriber contacting a long distance operator who would actually put the call through on the spot (in most cases).
That was called inside the industry, technically, "combined line and recording" (CLR) operation, where "recording" referred to taking the order for the call (which in the "booking" era was done by a "recording" operator) and "line" referred to actually accessing the intercity lines to complete the call.
During the "booking" era, the operators that actually set up the call were called "completing" operators. So sometimes the "combined line and recording" switchboards were called "recording-completing" switchboards (but still abbreviated "CLR").
Another interesting and related matter of terminology is that in UK practice (and thus, I'm afraid, on the Subcontinent) "trunk" specifically referred to an intercity "link", whereas in the US "trunk" referred to any link between switching centers, local or intercity.
Much fun.
Someday we can talk about traditional Indian vs. US railway signaling practice!
Best regards,
Doug