Specifications

185
Recommended Maintenance
particular telephone line or transmitter. See the printout of your operating parameters to be
sure.
Another variable to account for is the matrix plugs on the trunk cards. If you wish to swap
a couple cards around, be sure the matrix is configured properly for that type of telephone
line.
The general rule is that trunk and station cards have their DIP switch set to their slot
number in binary. No two trunk or station cards should have their DIP switches set the
same. The trunk cards should have their matrix jumpers set for the proper line type.
Recommended Maintenance
From an operational or software standpoint, some active maintenance is recommended, to
prevent running out of resources and otherwise noticing problems before your customers
tell you about them:
• Make sure you regularly back up your ZbaseW subscriber data to multiple sets of
backup disks, as described in the “Backup Systems” portion of the Subscriber
Database section of the Operations manual.
• Check the Statistics (do Comm Stats) on a weekly or monthly basis; see the section
on Statistics in the Operations manual. If the statistics for your trunks look wrong,
the trunks.cus file establishes the trunk groupings - see the System Configuration
Files section.
• ZlinkW password, or if you are using the ZbaseW Passwords capability: you may
want to change the passwords occasionally for better security, especially when
people leave your company.
• Do View Traffic often so you are familiar with your normal paging traffic.
• Be familiar with and use some of the more useful ZlinkW diagnostic commands
(explained in the Remote Maintenance section of this manual).
There is little periodic hardware maintenance needed on the system:
• Keep it clean - blow out the dust and dirt every year or two. Especially near the fan
and the slot openings in the covers and in the power supply area.
• The hard disk will die some day, but current hard disks have extremely long MTBF
(mean time between failure) ratings, which means that your disk should usually last
5 years. You should consider getting a spare hard disk to have on hand before this
day arrives.
• If your telephone lines are changed by the telephone company, you should recheck/
readjust the hybrid balance. You may not necessarily know when they change
equipment on their end of your telephone lines, so you may want to check this
periodically.