COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.6 - Operation/Configuration - V05 09/2016
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Settings
Providers and PBXs
SIP transport protocol
UDP (User Datagram Protocol) is used to send data packet over non-secure
communication lines without a connection. This means that successful
transmission is dependent on the application and is therefore not always
guaranteed. UDP itself does not verify whether data has been transmitted
successfully. When a UDP packet is sent, the sender cannot assume that
the packet will indeed arrive at the recipient. This particular protocol needs
only a small amount of additional information, and results in a better data
throughput rate in a well-functioning network, e.g., on a LAN. UDP is used,
e.g., for the DNS (Domain Name Server).
TCP (Transmission Control Protocol) is a transport protocol that segments
data into packets up to a specified size and reliably sends these individual
data packets in the correct sequence to the recipient address. In this
process, every data packet sent must be resent until it has been confirmed
as arrived. In order to make sure this happens, a large amount of infor-
mation is sent along with the actual payload data. Most Internet services are
implemented with TCP, e.g., HTTP (WWW), SMTP/POPS (e-mail), etc.
Important:
If encryption is enabled by SIPS, the TCP transport protocol
is used. Manual settings are overwritten.
UDP
: UDP is used.
TCP
: TCP is used.
RTP
DTMF signalling