My thoughts on VOIP are relatively simple; I believe that VOIP will be the next technology that will provide a replacement for the PSTN. The reason is that the PSTN technology is at this point an electronic version of the original design as edited in the early 1880’s with the patent of a concept of two wire circuits for telephones. It was improved in the late 1880’s with the addition of an exchange for switching calls to one another (Telephone History). The late 1960’s is when another major change occurred; we saw the first appearance of digital networks for the PSTN (Telephone History). Since that time the digital transmission of communications have been, with ever increasing speed, moved from the analog roots in the late 1800’s to the cheaper, cleaner, more efficient, and faster digital versions that we see today. This digital conversion has allowed technologies like wireless digital networks, and the Internet to arise. When looking at a digital switch or exchange, we find that comparing the cost to install, maintain, and operate tend to be on the order of many magnitudes more expensive than server based IP networks. This cost with the advent of more and more reliable IP networks will allow VOIP to eventually be the de facto standard for communication of both voice and data; additionally the cost of maintaining two separate networks, one for voice and one for data is becoming something that many providers of PSTN are looking to eliminate. When designing an IP network for thousands of users, the logical choice of whether or not to go with either a static IP configuration of a DHCP server to handle the IP addressing is to go with a DHCP server (or servers). The reason behind this decision is that the administration of manual addressing of static IP addresses to every host on the network would be overly burdensome. This translates into lost productivity when troubleshooting host networking or setup issues, extra cost in hours of labor for planning and administration of the network, additional cost when a host has to move to another physical location that may have a different subnet, and lack of flexibility for the network to expand over time. With a DHCP server there is a security concern over static IP configuration, but with firewalls, physical security or wireless encryption for WAPs, VPN technology, and application security many of those concerns are mitigated. The end result is that the tighter security of static IP networks at the additional cost is not worth it with the security mitigation techniques of modern DHCP hosted networks.
My thoughts on VOIP are relatively simple; I believe that VOIP
will be the next technology that will provide a replacement for the
PSTN. The reason is that the PSTN technology is at this point an
electronic version of the original design as edited in the early
1880s with the patent of a concept of two wire circuits for
telephones. It was improved in the late 1880s with the addition of
an exchange for switching calls to one another (Telephone
History).The late 1960s is when another major change occurred; we
saw the first appearance of digital networks for the PSTN
(Telephone History). Since that time the digital transmission of
communications have been, with ever increasing speed, moved from
the analog roots in the late 1800s to the cheaper, cleaner, more
efficient, and faster digital versions that we see today. This
digital conversion has allowed technologies like wireless digital
networks, and the Internet to arise. When looking at a digital
switch or exchange, we find that comparing the cost to install,
maintain, and operate tend to be on the order of many magnitudes
more expensive than server based IP networks. This cost with the
advent of more and more reliable IP networks will allow VOIP to
eventually be the de facto standard for communication of both voice
and data; additionally the cost of maintaining two separate
networks, one for voice and one for data is becoming something that
many providers of PSTN are looking to eliminate.When designing an
IP network for thousands of users, the logical choice of whether or
not to go with either a static IP configuration of a DHCP server to
handle the IP addressing is to go with a DHCP server (or servers).
The reason behind this decision is that the administration of
manual addressing of static IP addresses to every host on the
network would be overly burdensome. This translates into lost
productivity when troubleshooting host networking or setup issues,
extra cost in hours of labor for planning and administration of the
network, additional cost when a host has to move to another
physical location that may have a different subnet, and lack of
flexibility for the network to expand over time. With a DHCP server
there is a security concern over static IP configuration, but with
firewalls, physical security or wireless encryption for WAPs, VPN
technology, and application security many of those concerns are
mitigated. The end result is that the tighter security of static IP
networks at the additional cost is not worth it with the security
mitigation techniques of modern DHCP hosted networks.For further
information please review these sources:Patterson, M. (2013,
October 3). VoIP vs PSTN. In TechSling. Retrieved April 23, 2015,
from http://www.techsling.com/2013/10/voip-vs-pstn/Telephone
History: The Telephone Evolves. (2006, January). In Private Line:
Telecommunications expertise. Retrieved April 23, 2015, from
http://www.privateline.com/mt_telephonehistory/
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