Explanation of ALOCL command - anyone?

[phadobas]

I've been struggling with audio delays in one of our remote offices. I came across this ALOCL command in the past, but how to use it is beyond me. I understand that I can check off things like priority, bandwidth, low delay, etc., but they don't make any difference. And the NEC manual is completely useless.
So I'm wondering if anybody here knows how to use that command (or any other related command) to actually make some improvement in distant office sound quality. Or is there a writeup, an article or a "for dummies" book on it?

 

[3racefan3]

Once you set up ALOCL you then go to AIVCL and set up location to location.

ALOCL 8500 site use location ID 0 with 0.0.0.0 as IP address with 32 bit subnet mask, diffserv 24 for RTP, then I always set up the LAN 1 network as well example: 192.168.1.0 with 24 bit subnet diffserv 24 and set up your remote site as well with location 2 or whatever you choose, I like to use use the VLAN ID for the location as the ID.

Then in AIVCL set 0 to 2 ( this will automatically assign 2 to 0 as well), diffserv with a value of 46 for expedited forwarding and set payload g711 or g729 with payload size. Do this for LAN 1 location ID as well.
If you are not faxing across the network G729 will compress the packet as I am sure you are aware and might help.

Make sure your routers and ISP\network are set up and honoring QoS. That's the basics, there are few more settings you can set in these commands such as jitter buffer(min 10 max 30) but generally that should do it.

 

[phadobas]

This is a good start and I can work this next time I have a chance to do it. I appreciate your input on this. However, I'm lacking the understanding behind what you wrote, so if I were to need to tweak some settings, I wouldn't know where to start.
Where does diffserv 24 and diffserv 46 come from? Is that your arbitrary numbers or is that some generally accepted standard and routers and switches should know what that means?

Good point on the AIVCL command. I wasn't aware of that before...