Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 163)

Configuring nodes
Access Manager 2000 User Manual 5 -39
Node Access Failure
If Access Manager returns a NO CIRCUITS AVAILABLE message or
an Access Manager FAILED TO ESTABLISH CONNECTION TO
THE NODE message, try to access the node once more. Verify that the
node is configured to be Installed and Operational .
If Access Manager still fails to access the node, refer to the following
paragraphs.
Dial-Up Connection: If the node uses a dial-up connection, verify
that the correct telephone number and Hayes
 modem protocol (if
required) have been entered in the query path of the node definition
and that the node modem answers.
If the NO CIRCUITS AVAILABLE message appears, Access
Manager could not find an available modem to access the node. Use
the following steps to troubleshoot this error:
1. Verify that there is a Comline defined with the proper baud rate for
that modem. If the node is equipped with a 1200 baud modem and
you do not have a 1200 baud modem at the Access Manager site,
then configure the node in Access Manager for 2400 baud and let
the modems automatically downgrade when the connection is made.
2. If Access Manager fails to access the second or a successive node of
a multiple-node Access System 2000 or ConnecT1 Plus system, the
RS232 daisy chain from the first node to the desired node may be
faulty. Try accessing a preceding (lower-numbered) node in this
daisy chain. If the access to that node is successful, either the RS232
daisy chain is faulty and the originally requested node, or the NCC
2020 or CCC 1020 in the original node may be faulty.
3. If Access Manager still fails to access, repeat this step, going
gradually back toward the first Access System 2000 or ConnecT1
Plus node until the access is successful. If the RS232 daisy-chain
cabling is good, the master NCC 2020 or CCC 1020 may be faulty
in one of the nodes.
4. If Access Manager cannot access any node, verify that the
connected modem is properly configured, that the cabling is correct,
and that the Comline is configured correctly. Refer to the
appendices for cabling requirements, modem requirements, and
Comline requirements. Verify that all the following are true: