Problematic system

[ecsuk]

I have a site which is set up as follows

Site A - most of the calls come in here
IPO 403 running 1.3(34) with 10channel VOIP card and 16 DT exp card

There are 16 users on this site

This is connected via a 2Mb leased line to
Site B
IPO 406 running 1.3(34) with 10channel VOIP card and 30 DT exp card There are 4 IP phones connected to Site A)

this is where the servers are based.

Up until recently this has worked well (2.5years) thus we have not upgraded the software.

Recently the IT support company have reconfigured the network, changed all of the software other than voicemail server over to server 2003 and there are now two subnets running around (10.0.0.x which the IP offices are on and 10.10.x.x which the PCs are on)
At this point we started to suffer small glitches (drop outs in VOIP calls and the system and Site A system crashing overnight so when customer came in two or three of the DT2030s would have corrupted displays)

The configs really have not changed in 2.5 years apart from username changes.

I have spotted a couple of things in the config. The first is under the service - there is an option of two types of compression (MPP and Stac) which is best. There is also a Multilink/QoS tick box does this turn QoS on when you have a leased line or is it irrelavent.

If I upgrade the firmware which version do we go to given that the handsets are DT.

Any advice?

 

[IPGuru]

Multilink/QoS must be set, even if you are on a leased line connected to the 37 pin Wan connection

system crashes & corup displays indicate possible corruption of the Cfg

 

[ecsuk]

thanks IPguru what about the better compression?

 

[IPGuru]

Avaya do not recomend using compression with VoIP trafic

I would sugest you try all the options & see which works best for you