Juniper J2300 Getting Started Manual page 60

J2300, J4300, and J6300 Services Router Getting Started Guide
Table 15: PIM Terms
Term
ADSL 2/2+ Annex A
ADSL 2/2+ Annex B
bandwidth on demand
basic rate interface (BRI)
callback
caller ID
channel service unit (CSU)
data service unit (DSU)
data terminal
equipment–to–data
communication
equipment (DTE–DCE)
interface
demand circuit
dial backup
dial-in
dialer filter
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PIM Terms
Definition
ITU-T Standard G.992.1 that defines how ADSL works over plain old telephone
service (POTS) lines.
ITU-T Standard G.992.1 that defines how ADSL works over Integrated Services Digital
Network (ISDN) lines.
ISDN cost-control feature defining the bandwidth threshold that must be reached
on all links before a Services Router initiates additional ISDN data connections to
provide more bandwidth.
ISDN interface intended for home and small enterprise applications. BRI consists of
two 64-Kbps B-channels and one 16-Kbps D-channel.
Alternative feature to dial-in that enables a J-series Services Router to call back the
caller from the remote end of a backup ISDN connection. Instead of accepting a call
from the remote end of the connection, the router rejects the call, waits a configured
period of time, and calls a number configured on the router's dialer interface. See
also dial-in .
Telephone number of the caller on the remote end of a backup ISDN connection,
used to dial in and also to identify the caller. Multiple caller IDs can be configured on
an ISDN 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.
Unit that connects a digital telephone line to a multiplexer or other signal service.
Unit that connects a data terminal equipment (DTE) device—in this case, a Services
Router—to a digital telephone line.
Interface that a Services Router (the DTE) uses to exchange information with a serial
device such as a modem (the DCE).
A DTE cable uses a male 9-pin or 25-pin connector, and a DCE cable uses a female
9-pin or 25-pin connector.
Interface configured for dial-on-demand routing backup. In OSPF, the demand circuit
reduces the amount of OSPF traffic by removing all OSPF protocols when the routing
domain is in a steady state.
Feature that reestablishes network connectivity through one or more backup ISDN
dialer interfaces after a primary interface fails. When the primary interface is
reestablished, the ISDN interface is disconnected.
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. See also callback .
Stateless firewall filter that enables dial-on-demand routing backup when applied to a
physical ISDN interface and its dialer interface configured as a passive static route.
The passive static route has a lower priority than dynamic routes. If all dynamic
routes to an address are lost from the routing table and the router receives a packet
for that address, the dialer interface initiates an ISDN backup connection and sends
the packet over it. See also dial-on-demand routing backup; floating static route .