6
G.703 CODIRECTIONAL CONVERTER
Contents (continued)
Chapter
Page
4.
Operation ................................................................................................... 31
4.1 Front-Panel Controls and LEDs ......................................................... 31
4.2 Operating Instructions ....................................................................... 33
4.2.1 Turn-On Procedure ................................................................... 33
4.2.2 Activating Loops ......................................................................... 33
4.2.3 Turn-Off Procedure ................................................................... 33
4.3 Diagnostic Loops ................................................................................. 33
4.3.1 The Modem Self-Test ................................................................. 34
4.3.2 Local Analog Loopback ............................................................. 35
4.3.3 Remote Digital Loopback .......................................................... 36
4.3.4 Local Digital Loopback ............................................................. 37
4.4 Calling Black Box ................................................................................ 38
4.5 Shipping and Packaging ..................................................................... 39
Appendix: Pinouts ............................................................................................. 42