Carrier Access SNMP manual Pin Tip & Ring Jack, T1 Line Status LEDs for T1 Span 1 and T1Span

LED Test and Status Indicators

SNMP Control Panel. Setting this switch to the Alarm Cut-Off position (ON) opens the alarm relay contacts (150 Vrms, 150 mA maximum load) that close when the Access Bank II - SNMP enters an alarm state.

Table 9-3 defines the pin functions on the 50-pin Tip & Ring jack.

Table 12-3: 50-Pin Tip & Ring Jack

Pin Location	Function
26	Tip Channel 1
1	Ring Channel 1
27	Tip Channel 2
2	Ring Channel 2
↓	↓
49	Tip Channel 24
24	Ring Channel 24
50	Alarm Tip Channel 25
25	Alarm Ring Channel 25

12.11 LED Test and Status Indicators

Five test and status LED indicators on the Access Bank II - SNMP Control Panel provide a visual means of identifying system, T1 line and V.35 interface troubles.

Table 12-4: T1 Line Status LEDs for T1 Span 1 and T1Span 2

State	Meaning
OFF	Loss of T1 signal, no pulses received.
GREEN	Access Bank II - SNMP is in frame
	with a frame-bit error rate <10E-5.
FLASHING GREEN	Access Bank II - SNMP is in frame,
	but frame-bit error rate exceeds 10E-
	5.
RED	AIS (Unframed All Ones Signal)
	received from the incoming T1 span.
FLASHING RED	Access Bank II - SNMP is not syn-
	chronized to the incoming T1 line,
	but no AIS is being received.
YELLOW	BPV errors received on the T1 line
	that are not due to B8ZS line coding.
FLASHING YELLOW	Yellow Alarm received from the T1
	line.

9/24/01 12-13