Russian ⇄ English

речевой кодер stresses
sec.sys.	voice coder
tech.	speech coder
telecom.	vocoder; voice encoder (oleg.vigodsky)
цифровой речевой кодер
sec.sys.	digital speech coder

речевой кодер: 6 phrases in 3 subjects

Information security and data protection	3
Security systems	1
Telecommunications	2