Filter
Top Products
2-18 LightStream 2020 Installation Guide
Basic LS2020 Configuration Tasks
— For an E3 trunk port, specify the cable length (0 – 400 feet, 300 – 1000 feet, 800 – 1300
feet, or 1100 – 1900 feet) and the cell payload scrambling mode (enabled or disabled).
— For an OC-3c trunk port, specify the clocking mode (internal or external).
For more information about trunk port configuration, refer to the LightStream 2020 Configuration
Guide.
TCS Hub Command Summary
The procedures in this chapter make use of the following TCS hub commands:
• reset <slot#> Resets the card in the specified slot.
• connect <slot#> Establishes a connection to the card in the specified slot
• show <sa | sb> Detects the baud rate for the specified switch.
• set <sa | sb> Sets the baud rate for the specified switch.
• init <sa | sb> modem Initializes the modem port on the specified switch.
These commands and their associated arguments are described in greater detail in this section
wherever the TCS hub commands are used in specific procedures.
Attaching a Terminal to Console Port
This section tells you how to attach a terminal to the console port of a Release 2 switch card. It also
tells you how to match the baud rate between the terminal and the console port on the switch card.
Required Equipment
You need the following equipment to perform the procedures in this section:
• VT100 terminal (or equivalent)
• Terminal cable
Background Information
Prior to Release 2.1 of the LS2020 platform software, the TCS hub code for a Release 2 switch card
(SC2) supported baud rate selection for both the console and modem ports through what was called
the “BREAK” detection mechanism (also referred to as the “auto-baud” or “pseudo-auto-baud”
mechanism). Use of this mechanism, which involved multiple activations of the Break key for baud
rate selection, isno longer supported.Under this previous scheme, themidplane EEPROM locations
used to maintain the console and modem port baud rates were “reserved” and, hence, not initialized
with appropriate default values.
Now, when new TCS hub code is installed in a Release 2 switch card that has not had these
“reserved”locations initialized,the new codeevaluates thecontents ofthese EEPROMlocations and
initializes them, if required, with appropriate default values. See the section below entitled “Setting
Console/Modem Baud Rates through TCS Hub Commands” for these default values and the order
of precedence for other possible baud rates for the console and modem ports.