CTC Store CTS Union IP DSLAM for ADSL IPDSLAM-A8/A16 - Manual (Page 139)

XIII
Signal-to-Noise (S/N) ratio at a receiver point.
SNTP (Simple Network Time Protocol):
SNTP is a simplified version of NTP. SNTP can be used when the ultimate
performance of the full NTP implementation described in RFC 1305 is not needed
or justified.
SNAP
Subnetwork Access Protocol. Internet protocol that operates between a network
entity in the subnetwork and a network entity in the end system. SNAP specifies a
standard method of encapsulating IP datagrams and ARP messages on IEEE
networks. The SNAP entity in the end system makes use of the services of the
subnetwork and performs three key functions: data transfer, connection
management, and QoS selection.
SNMP (Simple Network Management Protocol)
Simple Network Management Protocol. The network management protocol used
almost exclusively in TCP/IP networks. SNMP provides a means to monitor and
control network devices, and to manage configurations, statistics collection,
performance, and security.
SVC
Switched Virtual Circuit. Virtual circuit that is dynamically established on demand
and is torn down when transmission is complete. SVCs are used in situations
where data transmission is sporadic. See also virtual circuit. Called a switched
virtual connection in ATM terminology.
VC
Logical circuit created to ensure reliable communication between two network
devices. A virtual circuit is defined by a VPI/VCI pair, and can be either permanent
(PVC) or switched (SVC). Virtual circuits are used in Frame Relay and X.25. In
ATM, a virtual circuit is called a virtual channel.
VID
VLAN ID. The identification of the VLAN, which is used by the standard 802.1Q.
Being on 12 bits, it allows the identification of 4096 VLANs.
VLAN
Virtual LAN. Group of devices on one or more LANs that are configured (using
management software) so that they can communicate as if they were attached to