SPI:SDH Physical InterfaceSD

PDH Physical Interface PPI

Physical Interface

physical interface level

physical interface specification

Synchronous Equipment Timing Physical Interface SETPI

service provider interface SPI

SPI interface

Application status records of year-end physical inventory List and physical inventory card

Physical Testing and Chemical Analysis Part A:Physical Testing

physiological and physical changes

Institute of Physical Oceanography and Physical Oceanography Laboratory

Interface between GPRS Support Nodes (GSNs) within a PLMN Gn interface

Activity of SDH

AN built-in SDH unit AXA10-AS1

ATM over SDH network

bench of SDH testing

capability of SDH

Delivery inspection report on SDH optical Transmission