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Chapter 1. Overview
DIALING
Dialing from the Express is accomplished in the following ways:
•
Using a VT 100 terminal connected to the rear panel EIA-232
port. (See VT 100 Terminal Emulation on page 2-7, Configuring the
Express on page 3-1, and Configuring the Express for V.25 bis In-band
Dialing on page 3-23.)
Over the DTE interface using the AT command set. (See AT
•
Commands and S-Registers on page A-1.)
•
V.25 bis in-band (used in applications such as LAN/WAN
bridging). (See Configuring the Express for V.25 bis In-band Dialing
on page 3-23.)
•
When DTR is raised. Routers can be configured when bandwidth
on their dedicated line is exceeded. In high-traffic times, this
allows the Express to dial out over the ISDN for an extra 128 kbps
of bandwidth-on-demand.
RECOMMENDED OPERATING PROTOCOLS
The Express supports a wide range of operating modes. Many combi-
nations of circuit type, protocol, and data rate may be selected. The
combinations shown in Table 1-1 on page 1-5 are recommended.
Table 1-1 shows that a given data rate may be achieved by more than
one protocol/rate adaption selection. The table is organized so that
selections with the least transport delay are closer to the top of the ta-
ble for any given circuit type. Therefore, choose a protocol and rate
closer to the top of the protocol rate list for a given circuit type.
1-4
Express 3010/3110 User Manual
61200239L1-20
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