intraprefectural call
A telephone call within the same prefecture but outside the caller's city, often used in contexts of call charges or dialing plans.
The charge for an intraprefectural call is a little higher than for a local call.
With this plan, intraprefectural calls are unlimited for a flat fee.
市内通話 is a local call within the same city, while 県内市外通話 is a call within the same prefecture but to a different city.
県外通話 is a call to a different prefecture, whereas 県内市外通話 stays within the same prefecture.
Compound of 県内 (within the prefecture), 市外 (outside the city), and 通話 (telephone call).