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convergent networks - Coggle Diagram
convergent networks
unified communication
topology
ISDN
manually switched
Vermittlungsstellen
receiving phone
calling telephone
automatically switched
hybrid
TODO
IP UC
TODO
cloud UC
TODO
protocols
data protocols
realtime transport protocol (RTP)
realtime transport control protocol (RTCP)
codec umsetzung
realtime transport protocol (RTSP)
management protocols
skinny client control protocol (SCCP)
properties
simple
messages for everything
components
call manager
cisco unified communication manager express (CUCME)
architecture
private branche exchange (PBX)
keyswitch model
hybrid model
session initiation protocol (SIP)
properties
open standard
extensible
function
feature services
components
registry databse
contains
user
contact address (CA)
1 more item...
address of record (AOR)
1 more item...
teclo server
registrar service
manages registry entries
location service
resolves AOR to CA
redirect service
informs a proxy about a user switching domain
proxy service
session border controller (SBC)
(often integrated into FW)
can translate CA to obscure caller identity
signal gateway
translates between SIP and other protocols
media gateway
translates between encodings
session handshakes
session initilization
B: 100 trying
B: 180 ringing
B: 200 ok
A: ack
A: invite
session termination
A: bye
B: 200 ok
why?
benefits
only one network needs to be managed
IP is more manageable
additional features
IP is capable of higher speeds
cons
additional protocol translations
QOS instead of hardware separation