web statisticsweb stats Business Phone Systems Tech Talk Forum - VOIP & Cloud Phone Help

Business Phone Systems

Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Jan 2006
Posts: 37
Member
OP Offline
Member
Joined: Jan 2006
Posts: 37
Has anyone even seen an intermittent issue where an 8 SLI and/or 16 SLI intermittently does not provide a power down (battery drop) when a CO line hangs up on an iDCS500R2 ?

System CO connection is via PRI and about 80 - 90% of the time the battery drops as it should on the SLI ports when the calling party hangs up. But every now and then it doesn't leaving our devices off-hook requiring the device to be powered down or unplugged to reset.

If you get on the circuit with a set you can hear the alternating high/low call dropped/hung up tone from the switch.

Power down timer has been increased to 5 seconds in an attempt to fix the problem to no avail.

All ports have power down option enabled, installer is stumped, Samsung even visited site at installer's request, still no luck even tracing back the root of the issue, whether it is coming from the switch or possibly the PRI, or maybe the SLI cards.


Brett Gilbert
LightGuy48
Atcom VoIP Phones
VoIP Demo

Best VoIP Phones Canada


Visit Atcom to get started with your new business VoIP phone system ASAP
Turn up is quick, painless, and can often be done same day.
Let us show you how to do VoIP right, resulting in crystal clear call quality and easy-to-use features that make everyone happy!
Proudly serving Canada from coast to coast.

Joined: Sep 2005
Posts: 690
Member
Offline
Member
Joined: Sep 2005
Posts: 690
I've seen that happen when SLI's are called by another station but not from a trunk call. I guess the question I have is the PRI actually disconnecting correctly or are just certain channels not. Maybe the system itself isn't getting a proper disconnect on the PRI. I'm stumped as to what else it could be.

Joined: Jan 2006
Posts: 37
Member
OP Offline
Member
Joined: Jan 2006
Posts: 37
I've honestly wondered the same thing because I've tried to duplicate the problem in a controlled situation and can never duplicate it.

However, I've got a question I can't rationalize in my head, if the switch did not see a proper disconnect on the PRI why would I be receiving a high-low hangup tone?

Is it feasible to receive trunk release without a disconnect? Seems like they should be one and the same.


Brett Gilbert
LightGuy48
Joined: Sep 2005
Posts: 690
Member
Offline
Member
Joined: Sep 2005
Posts: 690
Do you have a copper trunk you could test the same switch with? What if any cards have you tried swapping? Sounds like this one may take a while to solve.

Joined: Jan 2006
Posts: 37
Member
OP Offline
Member
Joined: Jan 2006
Posts: 37
We've tried it with both SLI8's and SLI16's and have the same result.

I think I've got an old TRK C1 card in storage, I'll have to come up with a line to test with since we've gone almost exclusively PRI.

But one other thing I failed to mention in my original post, this system is networked to an iDCS100 via another TEPRI card and we have some incoming trunks from that 100 which uses regular copper trunks and we have had the same thing occur with incoming calls from that system too.

I really wish I had a way to put a logger on the system that could track the DC voltage on these lines when the problem happens. I've thought about looking at a couple of vendors who make PC interfaces that provide a mux of 8 or so DC inputs that can be logged to a PC. Then I could probably get a true picture of what is happening.

This is truly the proverbial Watched Pot Never Boils.


Brett Gilbert
LightGuy48
Joined: Feb 2005
Posts: 137
Member
Offline
Member
Joined: Feb 2005
Posts: 137
I am assuming that you do have SLT loop open set to yes in MMC 300?

Joined: Jan 2006
Posts: 37
Member
OP Offline
Member
Joined: Jan 2006
Posts: 37
Yes, and as an attempt of last resort we have also tried changing the ring type in 208 to see if it made any change in the problem.


Brett Gilbert
LightGuy48

Moderated by  nameless, pvj 

Link Copied to Clipboard
Forum Statistics
Forums84
Topics94,262
Posts638,696
Members49,757
Most Online5,661
May 23rd, 2018
Popular Topics(Views)
211,098 Shoretel
187,709 CTX100 install
186,795 1a2 system
Newest Members
BPopilek, Rich F, LewisR, TDKs79, Buttinset
49,757 Registered Users
Top Posters(30 Days)
dexman 18
Toner 12
TDKs79 8
jc2it 4
teleco 4
Who's Online Now
1 members (Toner), 128 guests, and 243 robots.
Key: Admin, Global Mod, Mod
Contact Us | Sponsored by Atcom: One of the best VoIP Phone Canada Suppliers for your business telephone system!| Terms of Service

Sundance Communications is not affiliated with any of the above manufacturers. Sundance Phone System Forums - VOIP & Cloud Phone Help
©Copyright Sundance Communications 1998-2024
Powered by UBB.threads™ PHP Forum Software 7.7.5