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caller ID
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Telephone number of the caller on the remote end of a backup USB modem
connection, used to dial in and also to identify the caller. Multiple caller
IDs can be configured on a dialer interface. During dial-in, the router matches
the incoming call's caller ID against the caller IDs configured on its dialer
interfaces. Each dialer interface accepts calls from only callers whose caller
IDs are configured on it.
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dial backup
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Feature that reestablishes network connectivity through one or more
backup dialer interfaces after a primary interface fails. When the primary
interface is reestablished, the USB modem backup is disconnected.
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dialer interface (dl)
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Logical interface for configuring dialing properties and the control
interface for a backup ISDN connection.
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dial-in
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Feature that enables J-series Services Routers to receive calls from the remote
end of a backup ISDN connection. The remote end of the ISDN call might be
a service provider, a corporate central location, or a customer premises equipment
(CPE) branch office. All incoming calls can be verified against caller IDs
configured on the router's dialer interface.
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dialer profile
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Set of characteristics configured for the ISDN dialer interface. Dialer
profiles allow the configuration of physical interfaces to be separated from
the logical configuration of dialer interfaces required for ISDN connectivity.
This feature also allows physical and logical interfaces to be bound together
dynamically on a per-connection basis.
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Integrated Services Digital Network (ISDN)
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Digital communication service provided by telecommunication service
providers. It is an all-digital dialup (on-demand) service that carries voice,
data, and video transmissions over telephone lines.
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