Instruction manual

Page 1742 of 3156 Incremental Software Management
553-3001-306 Standard 10.00 January 2002
For example, if a system has 150 TNs configured and the new software only
has an ISM limit of 100 TNs, then the system will eliminate the additional 50
TNs. A SYS message appears if this situation occurs.
Keycodes
Option 11C and Input-Output Disk Unit with CD-ROM (IODU/C) customers
can modify ISM limits using a keycode.
A Keycode is a machine generated digitally signed list of customer
capabilities and authorized software release. A security keycode scheme
protects ISM parameters.
In order for Option 11C and IODU/C customers to expand ISM limits, they
must order and install a new keycode. This installation is performed using the
Keycode Management feature. All Keycode Management commands are
executed in Overlay 143. To make the expansion effective, the customer must
sysload. For further information on keycode installation, please refer to
Software Conversion Procedures (553-2001-320)
Operating parameters
When the total number of Terminal Numbers (TNs) configured in the system
is calculated, all TNs associated with analog (500/2500 type) telephones,
Meridian 1 proprietary telephones, AST DNs, Attendant Consoles, Digitone
receivers, tone detectors, and trunks are included in the total count.
The total number of TNs refers to Terminal Numbers (TNs) configured in
Overlays 10, 11, 12, 13, and 14. There is no differentiation among signaling,
data, or voice channels.
CAUTION
System information will be lost.
Upon software upgrade, if SYS message 4327, 4328, 4329, or 4330
appears at SYSLOAD, then SYSLOAD previous system disks. Order
ISM disks with sufficient system parameters configured. DO NOT
DATADUMP; system information will be lost. Call your technical
support department for assistance.