What's the difference with all the SCC power supplies in the way they boot up? And a 655A? 1

[kyle555]

And how does a 655A in a G650 compare?

So, I found out a customer built their PBX out of spare parts including many TN2224B HV12 circuit packs. The ones that don't use their angel ID to set a delay in when they draw max current when the PN powers up. The ones that can overload the power supply. Some support information says >HV13 is ok, others say HV18. Either way, its not like they're getting more TN2224Bs.

So, I read that a 676B supply in a SCC should have no more than 1 TN2224B HV9-12 in a carrier. A 676C, <13, a WP-91153 <6. a 1217A <3. There must be something particular about how these power supplies start up.

I'm curious how a 655A in a G650 would factor into that equation.

I guess the whole angel-ID thing makes sense. Every time I saw a PN come up, it was always the IPSI and then "no board" all the way through and they would come up sequentially. Come to think of it, I almost want to say I remember seeing A02 and B02 and C02 coming up before A03 B03 and C03. I guess I'm just curious because I've never found out - or needed to find out - how a port network comes online in any significant detail. And what the heck about power supply type makes it that they can each supply max power to only a certain number of cards, and every power supply is different? I guess it's the sort of thing that doesn't need to be published if the cards are supposed to go one at a time. Anyhow, thought I'd ask

 

[AvayaTier3]

All the SCC cabinet power units power up the same.
SCC cabinet types, Control Carrier 14 port slots, Expansion Control Carrier, Port Carrier 18 port slots.
The difference is in the power units and how old, and what load/capacity they were designed to support.

676B, 676C (use DC power source)

AC power source (110VAC, 208VAC, 220VAC)
WP-91153 L1, WP91153 L2, WP91153 L3, WP91153 L3A, WP91153 L4-25, WP91153 L4A-25, WP-91153,L5-20 (circa 1999)
1217-A, 1217-B - 1217A DEFINITY POWER SUPPLY SCC CABINET 1217B replaces all of the WP-91153 types. (after 2000)

SCC cabinets were first used in AT&T IS Information Systems (Western Electric MFG) Definity System 75 R1V2XE (circa 1985)
Typical circuit packs were 8 port, analog, hybrid, MET multifunction electronic telephone, digital, data-line.
There were no 16 and 24 port boards. These came later to condense for size and expand ports for capacity (double, triple)
At the same time these new board capacities required the same standards for wiring and distance as the older 8 port boards.
The newer the boards (suffix B,C,D,E,F,CP,GP,HP) the greater the enhancements and amount of bug/design fixes
The newer the Power Units (suffix L1,L2,L3,L4,L5) the greater the enhancements and updates
Power units designed to handle only 8 port circuit-packs cannot hold up when multiple 16 or 24 port boards are added to the cabinets.
With older Power Units, sometimes just reseating or installing a board cause the cabinet main power breaker to trip.

These boards came later, but all 8 port, 16 port, 24 port and combinations must be supported going forward, as well as
system 75 xe, system 75 G1, G3siv12 with up to 3 Expansion port networks MCC and SCC combinations, Linux platforms with SCC EPN stacks
which can be fiber or IP connected.

Rack mounted G650's with redundant 655A have been introduced and for over ten years, they have been used, as well as "MCC and SCC (EOS 2006)"
16 port analog circuit packs tn746, tn746B, tn791 (circa 1989)
16 port digital tn2181 (circa 1993)
24 port analog tn793, tn793B, tn2793, tn2793B (circa 2001)
24 port digital tn2214, tn2224, tn2224B, tn2224CP (circa 2002)

Needless to say, when using 24 port boards, the load on SCC cabinets should be equally spread between the SCC carriers so the
SCC power units can handle the loads created. The favorable power unit for SCC to support multiple 24 port boards is 1217-B
Powering up an SCC cabinet or SCC cabinet stack for all the Definity/CM systems, may act differently, in that boards initialize based
on total system maintenance routines with a priority of handling System call processing. The order of which slots initialize is not predicable based on angel address or otherwise.





A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

44 years Bell, AT&T, Lucent, Avaya
Tier 3 for 34 years and counting
[URL unfurl="true"]http://bshtele.com[/url]

 

[kyle555]

Thank you!

I guess my curiosity comes from a reference to a change notice I found on the Avaya website. I wonder how the 655A handles too many of these TN2224B's in a G650 and whether I'm reaching a bit to think it might have to do with poor audio quality within a single port network with TDM sets and trunks. I'm not saying its the root of my problem, but I am saying these guys built a PBX last year out of spare parts where most of the line cards were covered under a 15 year old PSN.

CHANGE NOTICE: 1283B Supplement 2. QPPCN Release Date: June 7, 2002.  Supplement 2 Release Date: November 20, 2003. Expiration Date: April 30, 2004.

TN2224B, vintage 3 or vintage 13 or later circuit packs correct an issue with power supply shut down following an EPN fiber link outage. 

For customers with 1217A equipped single carrier cabinets who have more than 3 TN2224B vintage 9 through vintage 12 boards in a single carrier cabinet and have experienced a power supply shut down following a fiber link outage, replace vintage 9 through vintage 12 boards with vintage 3 or vintage 13 or later boards so there are no more than 3 vintage 9 through vintage 12 boards per carrier. Not all 2224B boards in a single carrier cabinet must be replaced via this change notice. Up to 3 vintage 9 through 12 boards may remain.

For customers with WP-91153 equipped single carrier cabinets who have more than 6 TN2224B vintage 9 through vintage 12 boards in a single carrier cabinet and have experienced a power supply shut down following a fiber link outage, replace vintage 9 through vintage 12 boards with vintage 3 or vintage 13 or later boards so there are no more than 6 vintage 9 through vintage 12 boards per carrier. Not all 2224B boards in a single carrier cabinet must be replaced via this change notice. Up to 6 vintage 9 through 12 boards may remain.

For customers with 676B equipped single carrier cabinets who have one or more TN2224B vintage 9 through vintage 12 boards in a single carrier cabinet and have experienced a power supply shut down following a fiber link outage, replace all vintage 9 through vintage 12 boards with vintage 3 or vintage 13 or later boards.

For customers with 676C equipped single carrier cabinets who have more than 13 TN2224B vintage 9 through vintage 12 boards in a single carrier cabinet and have experienced a power supply shut down following a fiber link outage, replace vintage 9 through vintage 12 boards with vintage 3 or vintage 13 or later boards so there are no more than 13 vintage 9 through vintage 12 boards per carrier. Not all 2224B boards in a single carrier cabinet must be replaced via this change notice. Up to 13 vintage 9 through 12 boards may remain.

 

[AvayaTier3]

Is your g650 fiber or ipsi connected
hardware platform
CM software version

The PCN is only for power supply shutdown issues, due to load of older tn2224B
It does not mention tn2224 or tn2224CP. Certainly, audio issues are something not mentioned, or related.

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

44 years Bell, AT&T, Lucent, Avaya
Tier 3 for 34 years and counting
[URL unfurl="true"]http://bshtele.com[/url]

 

[kyle555]

6.3 IPSI and most 2224's are Bs covered by the note. I just figure if they're considered abusive in certain quantities to SCC power supplies that they've got to beat up 655A's in certain quantities too.

 

[AvayaTier3]

g650 with slot 00 and 15 for power, slot 01 for ipsi, then a clan and medpro, only leaves 11 slots for all other boards.

status environment xx (where xx is cabinet number) shows realtime voltages and temperatures for g650 cabinets with tn2312BP ipsi boards.

For audio issues, you should look at media-processor and IPSI and customer network for that g650

ip voice-stats

list measurements ipserver-interface summary yesterday-peak
list measurements ipserver-interface summary yesterday-worst
list measurements ipserver-interface summary today-worst
list measurements ipserver-interface summary today-peak
list measurements ipserver-interface summary last-hour
list measurements ipserver-interface hourly xx (xx = PN)
list measurements ip dsp-resource
detail hourly summary
Enter region number(1-80), 'yesterday-peak' 'today-peak' or 'last-hour'
list measurements ip dsp-resource summary today-peak
list measurements ip dsp-resource gw summary today-peak



A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

44 years Bell, AT&T, Lucent, Avaya
Tier 3 for 34 years and counting
[URL unfurl="true"]http://bshtele.com[/url]

 

[kyle555]

Yeah, their QOS is goofy for the IPSI connected PNs. there's the odd network outage and HB missed. The calls I'm dealing with are still just TDM sets and trunks in the same PN.

So 1 room is a little warmer than the other, but is being over on my +/-5 and -48 normal?

And thanks, you helped me find someone has 2B15's ring frequency switch set wrong!

Pow  Alm  Temp(F/C)   Hot     Voltage        FAN       Ring Voltage      Input
Loc  Cnt InLet  Exhst Spot  +5   -5  -48   Ctrl Alm Stat Ctrl  Set  Det  Power

02A00 0  64/18  66/19  ok  5.10 5.08 48.5  mid  N   ok   actv  20HZ  Y   AC
02A15 0  71/22  68/20  ok  5.13 5.10 49.0  mid  N   ok   stby  20HZ  Y   AC
02B00 0  62/17  68/20  ok  5.13 5.10 48.8  mid  N   ok   actv  20HZ  Y   AC
02B15 0  68/20  68/20  ok  5.13 5.08 48.8  mid  N   ok   stby  25HZ  Y   AC
02C00 0  66/19  66/19  ok  5.13 5.15 49.3  mid  N   ok   actv  20HZ  Y   AC
02C15 0  64/18  66/19  ok  5.10 5.10 48.5  mid  N   ok   stby  20HZ  Y   AC

CABINET POWER SUPPLY STATUS (655A)

Pow  Alm  Temp(F/C)   Hot     Voltage        FAN       Ring Voltage      Input
Loc  Cnt InLet  Exhst Spot  +5   -5  -48   Ctrl Alm Stat Ctrl  Set  Det  Power

03A00 0  78/26  82/28  ok  5.13 5.13 49.0  mid  N   ok   actv  20HZ  Y   AC
03A15 0  78/26  82/28  ok  5.15 5.18 48.8  mid  N   ok   stby  20HZ  Y   AC
03B00 0  82/28  82/28  ok  5.10 5.10 48.5  mid  N   ok   actv  20HZ  Y   AC
03B15 0  80/27  80/27  ok  5.10 5.10 48.3  mid  N   ok   stby  20HZ  Y   AC
03C00 0  82/28  82/28  ok  5.10 5.10 48.3  mid  N   ok   actv  20HZ  Y   AC
03C15 0  82/28  82/28  ok  5.13 5.13 48.5  mid  N   ok   stby  20HZ  Y   AC
03D00 0  80/27  84/29  ok  5.13 5.18 49.0  mid  N   ok   actv  20HZ  Y   AC
03D15 0  82/28  84/29  ok  5.13 5.13 48.5  mid  N   ok   stby  20HZ  Y   AC
03E00 0  80/27  80/27  ok  5.08 5.05 48.5  mid  N   ok   actv  20HZ  Y   AC
03E15 0  82/28  80/27  ok  5.08 5.08 48.8  mid  N   ok   stby  20HZ  Y   AC

 

[AvayaTier3]

Voltages look good to me
PN3 stack is definitely in a warmer room

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

44 years Bell, AT&T, Lucent, Avaya
Tier 3 for 34 years and counting
[URL unfurl="true"]http://bshtele.com[/url]