Instruction manual

Chapter 1. Overview
1-4 Express 3010/3110 User Manual 61200239L1-20
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.