Embed Size (px)
DESCRIPTION
"We make TECHNOLOGY easy" this is the core value for c2m Tech. We always give quality and reliable services to our customers. From past 30 years we are giving services in Texas. Good telephone systems we provide you for your business and once you buy from Custom Telephone Systems, you will receive in addition to the latest equipment, programming, keyset designations and on-site training. http://www.c2mtech.com/
Citation preview
VoIP Phone Systems Houston
PSTN ( Public Switched Telephone Network)
Known structure of conventional telephone network.
Call Direction
PSTNİstanbul, yeditepe Ankara, METU
PSTN history
Since the telephone was invented
in the late 1800s, telephone communication has not changed substantially .
These Count as Phones?
What is VoIP
IP TELPHONY (VOICE over IP) Transmission of voice telephone calls
using internet infrastructure.
Keep in mind!
IP Telephony must be backward compatible with existing PSTN.
There are several communication schemes:
Basic Idea Behind VoIP
Continuously sample audio.Convert each sample to digital form.Send the resulting digitized stream
accross an IP network in packets.Convert the stream back to analog for
playback.Before the procedure above, the system
must handle call setup. Phnumber to IP.
Contact Us at :-
Address -: c2mTech
1313 Valwood Suite #320 Carrollton, Texas 75006
Phone No -: (P) 972-881-2268 Dallas
(P) 817-442-2268 Ft. Worth(F) 972-221-9366
Website -: http://www.c2mtech.com/
Sales Representative -: [email protected]
