external communication; foreign correspondence
Refers to communication with foreign countries, especially in news reporting. Often used in compounds like 外信部 (foreign news department) or 外信記者 (foreign correspondent).
新聞の外信欄を読むのが好きだ。
I like reading the foreign news section of the newspaper.
He was assigned to the foreign news department.
A dispatch came in from Paris.
The correspondent sent a dispatch to the head office.