lượt xem
0:51
TONE Greater Than WORDS: The NO. 1Telecom Hack You’re Ignoring #wheelsofwisdom #leadershipskills
0:32
vicidial setup step by step | easy installation of Dialer | VoIP & Call Center Solutions
2:15
Mitel 6867i SIP Phone - Product Overview
41:20
Why the Philippines’ Outsourcing Economy Is Quietly Disappearing | AB Explained
7:34
What is VoIP?
2:28
What Is a VoIP Phone (+ How it Works)
9:11
Voice Training Exercise | Easy steps to improve the sound of your voice | Part One
38:47
Conversation Practice to Improve Your Business English — 35 Common Situations
