Siemens TC12 Installation, Commissioning And Maintenance Handbook page 15

TC12 Installation, Commissioning & Maintenance Handbook
the ITU cabinet but there is also the option of driving a remote SIP. The ITU can
also be used to drive a TC8 Instation.
There is also facility for an Instation Test Set which can be used to measure signal
levels and monitor communications (both data and errors) on the telephone lines.
It can also be used to take the place of either Instation or Outstation for testing.
The Outstation test set is used in place of the controller to both set Reply bits and
monitor Control bits at the OTU.
666/HE/43100/000 Page 5 Issue 10