Specifications

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Cisco ONS 15216 EDFA2/EDFA2-A Operations Guide, R2.4
July 2004
Chapter 3 Installation
3.4.4 Serial Interface Remote Communication via Modem
3.4.4.2 Modem Signals
The only signals required for communication are TXD (transmit), RXD (receive), and SIGNAL
GROUND. By adjusting the modem manufacturer settings, the other signals can be ignored.
3.4.4.3 Modem Power Up
The modem has a DIP switch that overrides certain NVRAM settings during a power up. For consistent
operation throughout the power cycles, the DIP switches must be set as displayed in Table 3-5.
3.4.4.4 Modem Configuration Settings
After configuring the DIP switch settings, each modem configuration must then be set using a terminal
program such as Microsoft Windows HyperTerminal.
Connect the modem to the PC serial port using a DB-25M to DB-9F modem cable as per the
manufacturer recommendations.
Local Site
1 PC running HyperTerminal
US Robotics 56K Fax modem V.90 The modem to ONS 15216 EDFA2
connection must be set for 19200 baud.
The modem to modem connection must
be set for 14400 baud.
1 10-ft DB-25M to DB-9F For connection between PC COM port
and modem.
1 RJ-11 to RJ-11 telephone cable For connection between the modem and
PSTN dial-up telephone line.
1 PSTN dial-up telephone line
Table 3-4 Communication Component List (continued)
Component Notes
Table 3-5 Modem DIP Switch Setting
DIP Switch Setting Up (U) or Down (D) Description
1 D Data terminal ready override
2U Verbal result codes
3 U Suppress result codes
4 D No echo, offline commands
5 U Auto-answer on first ring, or higher if
specified in NVRAM
6 U Carrier detect normal
7 U Load NVRAM defaults
8 D Smart mode