ATL Telecom AM64/512 - Manual (Page 12)

a telecom telecom User Guide User Guide High Speed Modems High Speed Modems
12
7.1 Line Quality 7.1 Line Quality
During synch-up, there are up to 4 `*’ characters indicating progress of the transmission circuit in gaining
sync. The stages of progression are as follows;
* - Detected tone.
** - Detected Frame Sync.
*** - Detected Full Sync.
**** - Detected Framer Sync.
Once the unit has achieved Sync, the status menu indicates a general qualitative guide to the signal quality
on each pair whilst the link remains in sync.
This message set indicates the quality of the signal to noise ratio of the two line pairs which is continuously
monitored and updated on the LCD.
0
= No link established.
1 = Low quality, low signal to noise ratio.
10 = High quality, high signal to noise ratio.
7.2 User Interface Control Signals 7.2 User Interface Control Signals
7.2.1 7.2.1 V.28 Interface V.28 Interface
These displays show the state of each Control Signal line AFTER any options have been taken into account.
For example, with option 105 set On, the state of line 105 will always be reported as On even if the
hardware signal is fluctuating up and down. Messages displayed are as follows ;
OR
5 6 7 8 9 0 1 2 5 6 7 8 9 0 1 2
The last message provides a condensed display of all the lines 105 to 142 together. A blank space to the
right of the digit indicates the line is Off, a black block to the right of the digit indicates that the line is On.
7.2.2 V.11 Interface 7.2.2 V.11 Interface
For X.21/V.11 interface, the lines are all replaced with a single status line which shows the state of the C
and I lines.
Quality P1 = 00 Quality P1 = 00
Quality P2 = 00 Quality P2 = 00
S> C on I on S> C on I on S> C on I off S> C on I off S> C off I on S> C off I on S> C off I off S> C off I off
Line 105 Line 105 On On
Line 106 Line 106 On On
Line 107 Line 107 On On
Line 108 Line 108 On On
Line 109 Line 109 On On
Line 140 Line 140 On On
Line 141 Line 141 On On
Line 142 Line 142 On On
Line 105 Line 105 Off Off
Line 106 Line 106 Off Off
Line 107 Line 107 Off Off
Line 108 Line 108 Off Off
Line 109 Line 109 Off Off
Line 140 Line 140 Off Off
Line 141 Line 141 Off Off
Line 142 Line 142 Off Off