Operation and Maintenance

8-9

9161-A2-GH30-30 April 1998

APM Removal

When you remove an APM from its slot, you can still edit the applicable
configuration options. If you are displaying a Status or Test screen when you
remove an APM,
The message APM Removed will display after the screen is refreshed and
all fields relating to the APM will be cleared.
Only the ESC (Previous menu), Main Menu, and Exit virtual functions will be
available when no other valid slots are available to select.
MIB objects applicable to the removed APM, and attempts to do a get or set
of those objects will display the message No Such Name.
NAM Removal
Although you can safely remove the T1 NAM from the housing with power on, the
T1 access unit does not support hot swapping of the T1 NAM. All APM
configurations travel with the NAM.
Downloading Software
The access unit is capable of accepting a software download from a PC through
its COM port to support a file transfer or software upgrade. The Download feature
is used only by your service representative to update your access unit.
File Transfer
The T1 access unit supports a standard File Transfer Protocol (FTP) server over
Transmission Control Protocol (TCP) to allow you to transfer configuration and
program files to/from a T1 access unit node. A complete binary image of the
configuration can be copied to a host to provide a backup. The T1 access unit
must be configured to support FTP sessions.
Initiate an FTP session to a T1 access unit node in the same way as you would
initiate an FTP to any other IP-addressable device.
Be aware of the following rules when doing a file transfer:
You must have Access Level 1 permission to use the put command.
You cannot put a file to the factory.cfg file under the system directory.
You can only put a NAM program file (nam1_ctl.ocd, nam2_low.ocd, or
nam3_hi.ocd) to a T1 access unit. It cannot be uploaded from a node to a
host.
You must change to the /system directory.
Before putting a download file, you must use the bin binary command to
place the data connection in Binary mode.