Combo card issues and SCN

[jjdad]

Hello All,

I have an issue with an SCN circuit.

There are two sites running IPO 500v2 on R9.1 connected SCN over a Metro Ethernet point to point circuit that just carries the VoIP traffic between offices connected to the WAN port on each IPO. Both IPO units are identical hardware wise and have been in place for quite some time.

Recently, I have been getting a lot of packet losses leading to garbled and faded calls. However, most of the time it works fine. I have seen as much as 60% packet loss.

I have both sites set to use the G.711 ULAW 64K codec only and the point to point is a 3 Meg circuit. The system is licensed for up to 8 calls over the SCN.

This problem just started in the past couple of weeks.

I have had the ISP check the point to point circuit and they say all is fine.

I have also set the SCN to work over a Internet VPN circuit and had similar problems.

So I am curious if I actually have a network problem with the ISP or do I have one or both of the combo cards giving me probelms.

And other than simply changing out the combo card, is there a way to see if a combo card is having problems?

Any advice would help.

Thanks!!

 

[Dexter0]

I will recommend you to take Wireshark traces on your IP Office network to see if the issue is from network side or ip office.

Also if you can take traces of low quality calls from sysmon.

 

[amriddle01]

Only the things carrying the data can lose the packets.....the circuits. Them remotely checking the config looks correct and perhaps the occasional ping test proves nothing, you need onsite point to point checking to measure packet loss and jitter etc, nothing here can be resolved with system programming