Reliable Disconnect 1

[thephonelady]

I know this is an issue that has been beat to death in this forum but here goes....
Customer just switched to a channel bank & now having probs with calls not disc. LS Disc is set to yes but I am confused as to which is the correct setting. If you are not getting rel. disc from the co do you set it to no. Forgive my ignorance on this. Also does hold interval play a part in this??
I was told that AVAYA does not support these kinds of lines- any truth to that??
Thanks all

 

[TouchToneTommy]

The open loop disconnect must come from the CLEC and their channel bank. If they don't provide it, and you set it to "yes" in CO line programming, you run the risk of trunk to trunk transfers giving callers a new dial tone to make outgoing calls on. You also get problems like voice mail not disconnecting, or recording the "please hang up and try again" recording, as well as abandoned calls on hold not being disconnected.

Hold interval is just how long a call stays on hold until the phone beeps to remind you of the call.

Hammer on the CLEC to provide the open loop disconnect, you may have to escalate to get someone that knows what you are talking about.

 

[dagwoodsystems]

I'm going to troubleshoot this EXACT problem tomorrow...channelbank and all.

Reliable Disconnect is set to no, because I don't believe the carrier provides it (they also said that the "standard" disconnect interval was 750msec).

I have all the tools of the trade, including a meter. However, I don't think I'll be able to witness such a brief disconnect with my bare eyes.

Other than finding a stray dialtone that actually works correctly, does anyone have any recommendations as to how to prove the Avaya side with the arsenal I might have in my van?

 

[HarrisD1200]

Not sure if you have a Ziad, but here's a procedure we came up with to test this.

Parts needed for this procedure:

One Ziad PHD
Two 6 conductor Biscuit Boxes with TIP and RING connected between the two (or a 6 conductor banjo)
One silver satin line cord
Appropriate connections for the customers equipment

NOTE: Dial tone returning does not verify that COD reached the customer, rather it merely verifies that COD is configured on a specific line. The DMS’s return immediate Dial tone, other switches provide other tones. For example, the MetaSwitch returns Fast Busy.

Set up the Banjo between the CO port and the customers equipment on a Loop Start line. Attach the Ziad to Tip/Ring (4&5), and set for AC, V, Digit Display, NORM, TONE. Leave in M(onitor) mode. Go off hook from the customer equipment, you should hear dial tone on the Ziad, and see an off hook event in the display. Hang up the customer equipment. Dial into the customer equipment from another line, and answer after the second ring. Again, the Ziad should display an event. Wait about 10 seconds, and hang up on the phone from which you called. If COD is working properly at the customers site, you will see an event happen immediately after the hang up. Use the scan button to highlight this event. The first number will be the length of the COD disconnect signal, the second number is not important. For example, you might see .800/1.5. This means a COD event of 800 ms was recognized by the Ziad. You may also receive dial tone after the hang up, but this is of no importance except to show that COD is truly configured on that line. The event on the Ziad determines if the COD reaches the customer or not.

If the COD event doesn’t reach the customer, then COD won’t work, even if it is programmed into the switch. If it does reach the customer, then the customer should configure his event timer to be less than what was recorded on the Ziad. IE, if the Ziad records 800 ms, the customer’s equipment would need to recognize a COD of less than 800 ms.

The reasons the COD event might not reach the customer are almost purely equipment related. If the circuit goes thru back to back channel banks, or through some older equipment that doesn’t recognize or respond to a COD signal, it might not get to the customer. The presumption is that you could do this test in the CO, and if it works there, but not at the customers site, look at the intervening equipment for the problem.