Analog-PBX vs. VoIP-PBX
Analog-PBX vs VoIP-PBX. VoIP PBX has significant advantages comparing to traditional Analog PBX.
VoIP PBX withmuch better on cost-efficiency. You can use an old x86 PC to build a Enterprise-Class PBX.
VoIP PBX has rich functions with very low costs, so small business or individual home could own a Enterprise-Class PBX, which just big companies had it in the past.
For analog PBX, Extension quantity relayed on the the quantity of hardware extension expanding card. You had to purchase a lot of such card to expand extension quantity.
By comparison, VoIP could have unlimited extension theoretically.
Only works on VoIP PBX
|Analog PBX||VoIP PBX|
|Wiring||Star topology; each desk requires a wiring from the cabinet||River topology; IP extensions can be deployed at any node over TCP/IP networks|
|Capacity||Capacity is limited by the hardware framework||Scalable capacity, depend on bandwidth and processor capability|
|Scalability||Complexity of system scalability depends on system size||Scalability can be done by using the same architecture|
|Networks Convergence||Voice and data require two separate networks||Voice and data are converged in one network|
|Internet Connectivity||Connect to Internet via VoIP gateway||Internet ready|
|MACs||Move, add, change extensions require physical connection adjustments||Simplified MACs; move, add, and change extensions can be as easy as plug-and-play|
|Extended Application||Traditional voice & call processing features||All add-on voice & call processing features implemented by software|
|Voice Application||Applications require designated interfaces and equipment||Software-based applications; easy to be implemented|
|Server Redundancy||N/A. Another complete PBX system can be configured as a backup system||Support server level redundancy|
|Configuration is done via phone set with command codes in common||Provide GUI or even web-based interface configuration|
|Off-premises Extensions||Do not support remote extensions||Remote workers and office are linked altogether by VPN/WAN|
|Multi-location||Cross-system linkage requires dedicated ISDN||Systems are connected by cost efficient Internet resources|
|CTI integration||Complex integration between PCs and telephones||PCs and phones are already integrated in one voice/data network|
|Average Cost Per Seat||Low to high, positively correlated with functionality and capacity||Low tomedium, independent of capacity|