Off Hook...No Dial Tone 1

[mentallimit]

We have been experencing this for a little while, and although it doesn't really hurt us, it is really annoying.

Sometimes when a person picks up their phone they hear no dial tone. When they press buttons nothing happens, but the display seems to be working. If they hang up and wait 10-15 sec's everything works fine again. Anyone experence this? Hopefully a quick fix.

 

[nohuhu]

mentallimit,

run a "list measurement tone-receiver summary yesterday-peak" command and look at "CC-TTR" row. if the "total denied" column for it equals to anything but zero, that's bingo. and i strongly suspect it is.

 

[mentallimit]

How would I go about increasing this as to allow more calls in and out?

 

[mentallimit]

Or rather where can I see what my limit is? The only denial was under DTMF in hour 1500.

 

[nohuhu]

mentallimit,

if you have denials in "dtmf" or "cc-ttr" you should add a tn744 circuit pack in that port network. this circuit pack will provide more resources.
also try to run "list measurements blockage pn yesterday-peak" report and see if there are any tdm bus blockages.

 

[mentallimit]

Thanks! It does look like I had a couple of denials. As to the tn744, how much more flexability would that give us?

 

[nohuhu]

mentallimit,

tn744 only provides 8 tone detection ports, it doesn't affect tdm bus blockage. if you have bus blockages you have two options: either reduce unneeded usage in that port network or move some resources into another port network. tdm bus has fixed number of timeslots, namely 512, and only 482 of them are available for calls. considering that any two-party call consumes two timeslots you can have no more than 241 simultaneous two-party calls on the bus. you cannot expand the bus itself, only add port networks.

 

[mentallimit]

I don't have any bus blockage...yet. But we are adding phones at a crazy rate.

If we pick up a phone and cannot get dial tone does that also mean any one trying to call in at that time would get their call dropped? We had alot of dropped calls and I am wondering if that is the reason why.

 

[nohuhu]

mentallimit,

if you don't have enough system resources to process dtmf digits it does not necessary mean you should have dropped inbound calls. how these calls are processed? do you have a call center or something?

 

[mentallimit]

Yes we have a product called "Zeacom" which is a call center type of system. Calls come in and are handled by VDN's and then transfered to the "Zeacom" box, calls then get queued and finally sent to available operator's.

 

[nohuhu]

mentallimit,

well, if calls are dropped before entering zeacom box, it is strange and you need to research it. if calls are dropped after entering zeacom, i'd first checked the box.