Guralp Systems CMG-DCM build <10,000 - Manual (Page 205)

Acquisition Modules and Platinum Firmware Building Networks
Local port/service: The default service (port) for the transmitter is 1565 but
an alternative port can be entered here if required.
Back-fill
Back-fill is the process whereby missing data are recovered.
Enable backfill: If selected enables the back-fill transmission.
Directory: The default directory for back-fill data.
Caution: Unless, managed, back-fill files will accumulate ultil they
fill the disk, which will disable the system. It is essential to
configure a directory-cleaner instance to manage these files: see
section 13.1.1.3 on page 207 for details.
Push
The push tab contains a table within which you can configure the GDI link
clients to which this transmitter should send data.
MAN-EAM-0003 205 Issue E - February 2014