|
Conventional PBX System |
Software-based
Far less expensive;
minimum space occupied;
Upgrade on PC, demand less equipment. |
Hardware-based
Expensive equipment investment;
More space needed for equipment;
Upgrade needs more equipment. |
Web-based
Easy to install, configure & manage;
Average IT employee is able to handle. |
Hardware configuration
Complex & difficult to configure;
Need an expert specially to handle. |
Open standards
Flexible & easy-to-use interface with existing systems;
Allows users to fine-tuning the systems. |
Proprietary
Rigid & difficult to interface with existing systems;
The provider pre-defined the system. |
Scalable to expand capacity & upgrade
Add or changes in users/extensions can be performed on the PC that has the software installed;
No re-wiring in the office space;
Able to handle large number of extensions/users. |
Limitation of expand & upgrade
Add or changes in users require hardware re-configuration &, expensive module;
Phone re-wiring;
Replacement of entire systems is likely for adding users/extensions. |
Inexpensive or free Features
Gives rich feature set with affordable price or for free;
easy-to-use. |
Expensive Features
Addition features charges with expensive costs;
Complex key commands make most features rarely used. |
Low infrastructure Costs
Only one wiring system of data connection. |
Standard infrastructure costs
Two separate wiring systems, one for voice & one for network connection. |
Remote access
Allow to access full internal network from anywhere for features administration, use of fax, voice & data.
| Limited access
Remote access to voice systems such as voice mails and some features. |
Flexible feature configuration
Users can personalize features with special details to distinctive callers with flexibility. |
Fixed feature configuration
No personalize features. |
Multi-offices/branches phone bill savings
Calls travel between offices/branches over the internet. Calling separate office from long distance like calling another extension. |
Multi-offices/branches phone bill unchanged
Multi offices/branches have individual phone systems which are not synchronized. Phone numbers in different office are external phone numbers. |
IDD call cost saving
CSave on IDD and local call charges when both sides are using IP phones. |
IDD cost unchanged
IDD & local calls are charged as using traditional phone system. |
Support Broad array of phones
Combinations of wired, wireless SIP-based hardware phone, digital & analog phone. |
Support only vendor proprietary phones |
