Advice on PRI issues 1

[KyBoy]

I have an IPO 9.0.5 with a VCM 32 and PRI card NI2. I have 42- 9608 IP phones 30 phones at main office and the rest at 2 remote locations on VPNs. The PRI is provided by a company in town that sends voice and data wireless. We have another IPO with this provider that works just fine however the customer is experiencing static dropped calls one way audio till they are blue in the face.
I have grounded unit replaced PRI and VCM card upgraded software made sure VoIP packets have priority on firewall switches and router. The voice provider has bent over backwards to make sure it is not their issue replacing all equipment and increasing bandwidth. The provider has other customers in the same area with a call center and they are not experiencing these issues.
Internal calls within the main office works just fine. internal and external calls is when the problem occurs. One other issue they mentioned is that sometimes when they press nine there is no dial tone and the system rebooted on its own today.
I have checked codec I have turned on and off DMP but issues with PRI continue.
So I have recommended the customer go with a wired circuit with windstream but now my neck is on the line if that dosent work. Could there be a problem with digital to IP translation within the IPO or is there a setting or something I'm missing? I have looked at monitor and system status but no alarms apparent.

 

[teletechman]

Had a similar issue with a Cable company that shall remain nameless. The router that they placed onsite for the company internet was doing a flood control that dropped every 11th packet, not good for voice. (Charter) oops the cable company told me that they have other customers with VOIP that is using this and not having any issues. We were doing SIP through this but the provider had an IAD that converted it to PRI. We finally got the cable company to change the router to a model that did not do the flood control and now no problems. Is the provider going through a modem/router to provide the PRI? Look at this and talk to the provider of the router.
Mike

 

[Gunnaro]

Wireless will never, no matter how good reception or router you have, beat a wired connection when it comes to voice.

Cheap and unreliable.

Kind regards

Gunnar
______________________________________
Mille viae ducunt homines per saecula Romam

 

[KyBoy]

Thanks gunner and teletechman I have been telling customer to switch to wired circuit for weeks. However my neck is 10' long on the chopping block cause if they switch and problem is not solved then my credibility is shot through the dark And I'm to blame I give telecom a bad name.

 

[Gunnaro]

So, you're livin' on a prayer?

To avoid getting wanted dead or alive, setup a trial SIP trunk on the same cr@p wifi connection. (it's all the same, only the name will change).

I bet the faults occur on that too, but then you have proved your point.
If it acutally get's better, you go with SIP.

Win-Win situation, and the winner takes it all

Kind regards

Gunnar
______________________________________
Mille viae ducunt homines per saecula Romam

 

[Telecomboy]

Just a little vote of confidence for you...I had a client trying wireless PRI handoff and it had static and sporadic one-way audio. The service provider did fix the one-way audio through programming on their router, but static could not be resolved. Moving to a wired PRI took care of it.

 

[tlpeter]

A wireless PRI?
Seriously, get a decent provider.
We do not have these bullshit solutions.


BAZINGA!

I'm not insane, my mother had me tested!

 

[Gunnaro]

That's probably because we have the infrastructure to do this the right way

I wouldn't sleep very well with a PRI on wifi.

Kind regards

Gunnar
______________________________________
Mille viae ducunt homines per saecula Romam

 

[IPGuru]

In the UK providers occasionally try to provide PRI services to remote locations with fixed Microwave links.

These often cause problems due to various outside influences such as :-

Leaves on trees (Microwaves are line of site & no one noticed when he dish was installed mid winter)
Heavy rain or snow (Microwaves are absorbed by water, that's how the magic box in the kitchen works ;-)
Delivery lorry stopping & security (Yes we had that at one site 16:30 every Friday)


of course cable is not immune from outside interference either but someone digging up the road near by tends to cause a total outage not simply intermittent call drops & is generally easier to spot.

wireless connections should always be an absolute last resort

A Maintenance contract is essential, not a Luxury.
Do things on the cheap & it will cost you dear

 

[Telecomboy]

It was the first I had seen it. The building was new and they didn't wire it to the telco box in the street so they had no way to get a wired connection. They ended up making them bring a service cable in.