発はっ信しん者しゃ識しき別べつ番ばん号ごう

Meanings

1

noun

caller ID number

computing

Technical term used in telephony and computing for the number that identifies the calling party.

discriminating, know, write

別separate, branch off, diverge

番turn, number in a series

号nickname, number, item

発はっ信しん者しゃ番ばん号ごう
A shorter, more common term for caller ID number, often used in everyday contexts.
発はっ信しん者しゃ識しき別べつ
Refers to caller identification in general, without explicitly mentioning the number.

Compound of 発信者 (caller) + 識別 (identification) + 番号 (number).