If you're running a 4K, then BSSU will show you the status of your T1's:
[highlight #FCE94F]Last 15 minutes:[/highlight]
DIS-BSSU:1,6,9,0,CURR,;
H500: AMO BSSU STARTED
H40: PARAMETER CIR IGNORED. FOR TMDN/DIU2U BOARD
DATA OF WHOLE BOARD WILL BE DISPLAYED: 1.6.9 .
CIRCUIT 0 :
+==============================================================================+
| CURRENT 15 MIN. STATISTICS FOR TMDN/DIU2U LTG.LTU.EBT: 1 .6 .9
+------------------------------------------------------------------------------+
| |
| ESF 116 |
| ES CURR 0 PREV 0 |
| FS CURR 0 PREV 0 |
| BES CURR 0 PREV 0 |
| OES CURR 0 PREV 0 |
| US CURR 0 PREV 0 |
| DS CURR 0 PREV 0 |
| |
| 6 MINUTES 22 SECONDS INTO CURRENT INTERVAL. |
+------------------------------------------------------------------------------+
| |
| ALARM STATUS : NO ERRORS(GREEN) |
+------------------------------------------------------------------------------+
[highlight #FCE94F]Last 24 hours:[/highlight]
DIS-BSSU:1,6,9,0;
H500: AMO BSSU STARTED
H40: PARAMETER CIR IGNORED. FOR TMDN/DIU2U BOARD
DATA OF WHOLE BOARD WILL BE DISPLAYED: 1.6.9 .
CIRCUIT 0 :
+==============================================================================+
| 24 HOUR TOTAL STATISTICS FOR TMDN/DIU2U LTG.LTU.EBT : 1 .6 .9
+------------------------------------------------------------------------------+
| ESF 116 |
| ES 65535 FS 111 |
| BES 0 OES 113 |
| US 0 DS 0 |
+------------------------------------------------------------------------------+
| LOOPBACK STATUS: |
| |
| LOCAL : SET PAYLOAD : CLEAR |
| REMOTE REQUEST : SET |
+------------------------------------------------------------------------------+
| |
| ALARM STATUS : NO ERRORS(GREEN) |
+------------------------------------------------------------------------------+
[highlight #D3D7CF]ESF - Extended Superframe Errors? (Not in the documentation)
ES - Errored seconds
FS - Failed seconds
BES - Bipolar errored seconds
OES - Out of frame errored seconds
US - Up-slips
DS - Down-slips[/highlight]
[highlight #FCE94F]SDSU will show you what channels are in-use on your T-1's and their overall health:[/highlight]
DIS-SDSU:,,PEN,PER3,1,6,9,0;
H500: AMO SDSU STARTED
LTG1 (PERIPHERY)
------
MOUNTING LOCATION MODULE NAME BDL BD(#=ACT) STATUS
** .LTG 1.LTU 6.009 DIU2U-M A Q2216-X READY/BUSY
CCT LINE STNO SI BUS TYPE
000 4693 PP NW READY/BUSY
MULTLINE 30 . . . . . . . . . . . . . .READY/BUSY
007 NETWORK SUBUNIT . TMD CO ISDN READY/BUSY/CP
CPH
(ALT_ROUT: N) (S1COD )
LINE: 4693 STNO: SI:
001 . . . . . . . . TMD CO ISDN READY/BUSY
008 NETWORK SUBUNIT . TMD CO ISDN READY/BUSY/CP
CPH
(ALT_ROUT: N) (S1COD )
LINE: 4693 STNO: SI:
001 . . . . . . . . TMD CO ISDN READY/BUSY
AMO-SDSU -111 STATUS DISPLAY IN SWITCHING UNIT
DISPLAY COMPLETED;
<
[highlight #FCE94F]SDSU Statuses[/highlight]
[ul]
[li]AMO = manually blocked by amo[/li]
[li][/li]
[li]BUSY = busy, in use (the terminal/terminals is/are operational,[/li]
[li]and the terminal is busy at the moment)[/li]
[li][/li]
[li]CP = seized by call processing[/li]
[li][/li]
[li]CPH = cph bit of call processing[/li]
[li][/li]
[li]DEF = blocked by dependability because of a fault[/li]
[li][/li]
[li]DEFIL = circuit alarm (defect in line)[/li]
[li][/li]
[li]DEP = seized by dependability[/li]
[li][/li]
[li]DEPLOCK = block caused by L2 error[/li]
[li][/li]
[li]GENNR = generated but not ready[/li]
[li][/li]
[li]HIRAMO = blocked due to lock by amo[/li]
[li][/li]
[li]LHB = local hardware block[/li]
[li][/li]
[li]LMB = local maintenance block[/li]
[li][/li]
[li]LOCK = hard block/out of service[/li]
[li][/li]
[li]LSB = local software block[/li]
[li][/li]
[li]NL = not loaded[/li]
[li][/li]
[li]NOGEN = not assigned (for swu)[/li]
[li][/li]
[li]NPR = not present[/li]
[li][/li]
[li]READY = in service (the terminal/terminals is/are ready for use)[/li]
[li][/li]
[li]RHB = remote hardware block[/li]
[li][/li]
[li]RMB = remote maintenance block[/li]
[li][/li]
[li]RSB = remote software block[/li]
[li][/li]
[li]SIGNOFF = signed off[/li]
[li][/li]
[li]SOFTLOCK = soft block/out of service pending[/li]
[li][/li]
[li]TRS = remote block[/li]
[li][/li]
[li]UNACH = hierarchical block[/li]
[li][/li]
[li]UNAVA = blocked due to interrelationships[/li]
[li][/li]
[li]WAIT = waiting for an event (e.g. end of loading)[/li]
[li][/li]
[li]WBT = wrong board type[/li]
[/ul]
As far as your question about what should be checked.... Your best bet would be to just look at the HISTA error logs. This search shows me everything from today 3AM-8:30AM:
STA-HISTA:SEARCH,2018-08-30/03:00,2018-08-30/08:30,,;
H500: AMO HISTA STARTED
H1: 00003 ERROR MESSAGES FOUND
F5645 M4 N7115 OUT SERV BPB CIRCUIT L1 ERROR S0 18-08-30 04:54:53
ALARM CLASS:SWU-PER:004
** :LTG1 :LTU1 :001: 06 : 0 Q2324-X500 STMI4/1 BST:01 PLS:-11
REASON:04H NO SIGNAL (RED) (LOCAL ALARM)
FORMAT:36 DEVICE NAME: ONLYSYM
F5992 M4 N7116 IN SERV BPB CIRCUIT LX ACTIVE S0 18-08-30 04:57:29
ALARM CLASS:SWU-PER:004
** :LTG1 :LTU1 :001: 06 : 0 Q2324-X500 STMI4/1 BST:01 PLS:-11
REASON:07H LAYER 1 ACTIVE (GREEN)
FORMAT:36 DEVICE NAME: ONLYSYM
F5455 M4 N7117 IN SERV BPB TERM LX ACTIVE 18-08-30 04:57:31
ALARM CLASS:SWU-PER:004
** :LTG1 :LTU1 :001: 06 : 1 Q2324-X500 STMI4/1 BST:01 PLS:-11
FORMAT:22 DEVICE NAME: OPTIIP EXTENSION NUMBER: 8011
5F08000000FFFFFFFFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
FFFFFFFFFF
AMO-HISTA-111 READ HTS HISTORY FILE
START COMPLETED;
<
But looking at that can make you have a panic attack. It looks bad, because you see alarms and the text is in red. All it's telling me is that I had one phone reboot. The user likely unplugged it and plugged it back in.
I'd highly recommend getting a support contract with proactive monitoring. Black Box has a remote monitoring device attached to both of my PBX's and they "phone home" when there's an issue. Black Box would then check things out and only bother me if there's a major problem. If it's something minor, I may never even hear about it. Which is nice.
Looking up your STMI cards? Best bet is with the GUI. It depends on what version of PBX you have as to where this info is located. On my V6, it's under Expert Mode > Gateway Dashboard. It tells you the status of your boards and gives you the links to web based management (WBM). Great starting point. The Gateway Manager tells you the firmware versions on your boards.
Want some resiliency in your STMI cards? You can arrange them in board pools, so if a STMI card fails another board will come online and takeover. The AMO is BPOOL.
Enough to give you a headache yet?
LoPath
Maintain HiPath 4000 V5 & V6, OpenScape Xpert V4, OpenScape Xpressions, OpenScape Contact Center V8, OpenScape Voice V9