Q: What is Voice over IP (VoIP)?
Q: How to apply for an IP phone?
Q: How reliable is IP phone system? I have heard bad comments from some VoIP users.
Q: I heard that data and voice share the same network, will they interfere with each other?
Q: Will voice quality degrade while my computer is running bandwidth demanding applications?
Q: What about fax machines, modems and alarm systems that must work with analog signals?
Q: How to reset voice mail password and change location, phone features and user details of a phone?
Q: How can I create my Personal Address Book?
Q: How can I change my Browser password and phone PIN?
Q: What is Voice over IP (VoIP)?
Voice over IP (VoIP) is a digital technology that allows voice and video calls to be conducted over a public or private IP network using a combination of computers and IP phones at both ends (as opposed to the PABX phone system using analogue technology to carry voice-only calls over a public or private telephone network using a combination of telephones and fax machines at both ends). Through the appropriate digital gateway, the digital IP telephony (IPT) System is able to communicate seamlessly with an analogue PABX phone systems over the analogue telephone network and vice versa.
Q: How to apply for an IP phone?
Contact the General Office of your department to submit a 'CSC Work Request' through the online Service Portal, and our staff will process your request as soon as possible.
Q: How reliable is IP phone system?
The IP phone system core equipment and core network are built with fully redundancy and highest priority is given to the voice traffics to ensure best quality and reliability.
Q: I heard that data and voice share the same network, will they interfere with each other?
Although the voice and data traffic share the same network cable, they are running on separate VLANs. So that they will not interfere with each other.
Q: Will voice quality degrade while my computer is running bandwidth demanding applications?
Since voice quality is sensitive to jitter (delay), highest priority is given to the voice traffics traffic to ensure best quality and reliability. Therefore, voice quality is ensured even if your computer is running bandwidth demanding applications while using the IP phone.
Q: What about fax machines, modems and alarm systems that must work with analog signals?
We will place such fax machines, modems and alarm systems behind a voice gateway, which should work with existing analog devices and convert them to run on the IP phone system.
Q: I don't want the others seeing my telephone number when I make an external call. Can I hide the display of my number?
If you do not want your phone number displayed on an external call, you can dial <0133> .
Q: How to reset voice mail password and change location, phone features and user details of a phone?
Contact the General Office of your department to submit a 'CSC Work Request' through the online Service Portal, and our staff will process your request as soon as possible.
Q: How can I create my Personal Address Book?
Please click here for the detailed procedures.
Q: How can I change my Browser password and phone PIN?
Please click here for the detailed procedures.
IT.ServiceDesk@cityu.edu.hk
