■If the modem is not configured correctly in the operating system, the operating system may fail to communicate with the modem and periodically retry this operation. These periodic attempts will gain ownership of the modem from IRC making it unavailable for login. Check for proper operation of the modem by temporarily disabling IRC. When proper operation with the operating system has been verified, re- enable IRC.
Cannot obtain a login prompt in shared mode
When dialing into the managed server, the phone is answered and the modems complete negotiation, but a login prompt does not appear on the management console after three carriage returns are entered.
Explanation: Three carriage returns are used to positively identify that an incoming call is intended for IRC. If this sequence is not correctly received by IRC or if IRC did not own the modem at the time the call was received, you do not receive a login prompt.
Solution: Assuming that the login prompt can reliably be obtained when the modem is in dedicated mode, the following are possible solutions:
■Insure that you are sending three carriage returns (Enter key) within 10 seconds after a connection had been established with IRC. If any other character is received, or the carriage returns are received after the timeout period, the call is incorrectly forwarded to the operating system.
■The modems on the managed server and the management console may be incompatible – even if the modems seem to work properly in dedicated mode. If the modems do not establish a consistently clean connection, spurious and/or erroneous characters received after the data carrier detect (DCD) signal interfere with the carriage return sequence, incorrectly forwarding the incoming call to the operating system. This is a problem particularly if the modems are from different manufacturers or of different speed classes. Try using the same type and brand of modem in both the managed server and the management console.
