dial backup

dial backup

[′dīl ′bak‚əp]
(communications)
A dial telephone line that can be used in case a point-to-point line fails, so that data transmission can continue.
References in periodicals archive ?
The device offers a rich feature set that includes role-based access control, support for RADIUS management authentication, secure management communications with SSH and IPSec, Dial Backup and Virtual Router Redundancy Protocol (VRRP), and IP Quality of Service (QoS) with DiffServ and Weighted Fair Queuing.
An RS-232 WAN port allows the user to connect to a modem/TA as a dial backup if the broadband access circuit breaks up.
The device offers a feature set that includes role-based access control, support for RADIUS management authentication, secure management communications with SSH and IPSec, dial backup and virtual router redundancy protocol, and IP QoS, with DiffServ and WFQ.
Every customer has dial backup either in the form of a regular business line or, in the case of larger customers, an ISDN circuit.
The WebRamp 510i is specifically designed for small offices and branch offices that require a constant, high-speed connection for bandwidth-intensive applications and includes corporate-class software features such as VPN, dial backup, remote dial-in for telecommuters and access controls.
The new PCI PED-approved Optimum T4200 family will be available in three EMV and three non-EMV models, including a dial only model, Ethernet/SSL with dial backup and wireless GSM/GPRS connectivity also with dial backup.
The WebRamp 510i is specifically designed for small offices and branch offices that require a constant, high-speed connection for bandwidth-intensive applications and includes corporate-class software features such as virtual private networking (VPN), dial backup, remote dial-in for telecommuters and access controls.
After much research, the company determined that ISDN was not only a reliable technology for backing up mission-critical dedicated digital circuits, but also an extremely low cost alternative to switched 56 kb/s dial backup.
He sought a concentrator with built-in dial backup operating in half-duplex mode, thus requiring only two modems and one line to make a transmission.
25 devices to attach directly to Bay Networks routers and eliminate the need for costly parallel WANs for legacy applications; PPP dynamic IP neighbor discovery, which saves network managers time by removing the need to manually configure adjacent hosts; Asynchronous PPP, which lowers costs by enabling routers to use inexpensive modems to establish PPP connections for Dial Backup, Dial-on-Demand, and Bandwidth-on- Demand applications; and Dial Backup into Frame Relay services to give customers another option for flexible dial backup solutions and eliminate the need for costly long-distance backup connections.
The modem may exhibit unreliable operation over the switched network when dial backup becomes necessary.