Avaya Configuring Dial Services Bedienungsanleitung Seite 32

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Configuring Dial Services
1-2 114062 Rev. A
All three dial services work over public, switched networks such as a standard
telephone network, a switched 56 Kb/s network, and an Integrated Services
Digital Network (ISDN)
(Figure 1-1).
Figure 1-1. Example of Dial Access to a Switched Telephone Network
The router initiates, monitors, and terminates dial-up connections using either a
dial device (modem, ISDN terminal adapter) that supports Raise DTR, V.25bis, or
a router with an internal ISDN interface connected to an ISDN network. An
internal ISDN interface eliminates the need for external dial devices. If the router
has built-in ISDN capability, you can connect to an ISDN network directly.
Note: Basic Rate Interface (BRI) service requires a network terminator 1
(NT1) to connect to an ISDN network. The router’s built-in BRI module does
not include an internal NT1, so you or your service provider must supply it.
Modem
DSU/CSU
Router
Dial-up line
Dial-up line
Dial-up line
Dial-up line
*You only need a terminal adapter if your router does not have built-in ISDN capability.
If your router has an ISDN/BRI module or an MCT1 or MCE1 Link Module installed,
along with ISDN software, you can connect to an ISDN network directly.
Terminal*
Adapter
PSTN
Switched
56K
ISDN
DS0005A
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