Multi-Tech Systems MVPFXS-16 - Manual (Page 115)

MultiVOIP FXS User Guide Operation & Maintenance
115
IP Statistics: Field Definitions
Field
Name Values Description
UDP versus TCP . (User Datagram Protocol versus Transmission Control Protocol).
UDP provides unguaranteed, connectionless transmission of data across an IP network.
By contrast, TCP provides reliable, connection-oriented transmission of data.
Both TCP and UDP split data into packets called “datagrams.” However, TCP includes
extra headers in the datagram to enable retransmission of lost packets and reassembly of
packets into their correct order if they arrive out of order. UDP does not provide this.
Lost UDP packets are unretrievable; that is, out-of-order UDP packets cannot be
reconstituted in their proper order..
Despite these obvious disadvantages, UDP packets can be transmitted much faster than
TCP packets -- as much as three times faster. In certain applications, like audio and
video data transmission, the need for high speed outweighs the need for verified data
integrity. Sound or pictures often remain intelligible despite a certain amount of lost or
disordered data packets (which appear as static).
IP
Address n.n.n.n
0 - 255 IP address of the MultiVOIP. If DHCP is enabled, the address assigned by the DHCP
server will be displayed.
“Clear”
button -- Clears packet tallies from memory.
Total Packets Sum of data packets of all types.
Transmit
ted integer
value Total number of packets transmitted by this VOIP gateway since the last “clearing” or
resetting of the counter within the MultiVOIP software.
Received integer
value
Total number of packets received by this VOIP gateway since the last “clearing” or resetting of
the counter within the MultiVOIP software.
Received
with
Errors integer
value Total number of error-laden packets received by this VOIP gateway since the last
“clearing” or resetting of the counter within the MultiVOIP software.
UDP Packets User Datagram Protocol packets.
Transmit
ted integer
value Number of UDP packets transmitted by this VOIP gateway since the last “clearing” or
resetting of the counter within the MultiVOIP software.
Received integer
value
Number of UDP packets received by this VOIP gateway since the last “clearing” or resetting of
the counter within the MultiVOIP software.
Received
with
Errors integer
value Number of error-laden UDP packets received by this VOIP gateway since the last
“clearing” or resetting of the counter within the MultiVOIP software.