406<->SO and more

[nitz01]

hello all.. I am new to the game and would appreciate any advice on the following.

we currently have an Avaya IP Office 406 installed in Miami and VPN connections to New York, Carpi(Italy), Fabriano(Italy). Ultimately we would like to have Miami-IPOffice406,Carpi-IPOffice406,NY-SmallOffice,Fabriano-SmallOffice. However, for now I would appreciate some help integrating Miami-406 and New York-SO using the existing VPN.

We would like to achieve the following.

Have a 1-800 number for NY terminated on our existing PRI in Miami and have all these 1-800 incoming calls routed via VoIP/VPN to NY and ring a hunt group there.

Have all outbound calls in NY routed through VoIP/VPN to Miami to take advantage of cheap calling plan.

NY will have two analog lines for manual failover in case VPN link dies.

Central Voicemail will be used via a Voicemail Pro Server.

We will not be utilizing the WAN port on either IPOffice as we have an existing VPN.

Is this all possible?
In addition, a few posts refer to SCN. Is this a specific feature that must be implemented, or just referring to the network formed when routing information is added to other ipoffices is added.

Any implementation resources or advice on the pitfalls of this scenario would be much appreciated.

 

[crashtest1000]

It is all possible.

Couple questions do you have some srot of QOS over these VPNs for the voice traffic?

SCN is small comunity network and allows users on one site to see the details of another site busy DND etc. It is built into the IPOffice IP trunks.

 

[NuggiFirst]

Yes it's possible.

The 406 of course needs a VCM card.

The incomming routes in Miami (for the NY lines), should be pointed to shortcodes like the one below:

Telephonenumber: 999
Shortcode: 888
Linegroup: 10
Feature: Dial

Here "888" is the HG-number to reach in NY, "10" is the SCN-line configured between the systems.

In NY it's pretty easy:
You either create a shortcode on each user, that sends all outgoing calls to the SCN-line between the sites, or you make a systemwide shortcode for the samme.
You can then create a shortcode for the analog lines, so you just dial with a prefix to use the analog lines.

SCN is:
Small Community Networking. It's an IP Office feature that allows two linked systems to exchange information. In your scenario a Miami user will be able to see busy/DND status of the NY users. In other words: The systems will in many ways act like one single system.
When you use SCN it's VERY important that you use different numberplans on linked sites! User also have to use unique names.

If you run into problems with the setup, there's plenty of help on this forum ;-)

 

[nitz01]

crash,
unfortunately an MPLS network that gaurantees QoS is cost prohibitive. I have not looked into IP-VPN providers, but I hear they also gaurantee QoS. As a result, we are going to rely on all of our edge equipment (firewalls/routers) and LAN switches, which are all QoS capable to give priority to VoIP and hope that's enough. Obviously, the encryped VoIP traffic on WAN routers will get no priorities..can't control that. NY has ADSL 1.5/768 with 6 users, Miami has T-1 and only using about a third of the bandwidth on most days.
Our offices all have different providers, so if you can recommend a global provider that offers cheap QoS on lines from ADSL to T-1, please let me know.
thanks

 

[pluigi]

We have several customers running SCN over VPN from Italy to NY with great results.
Force IPO to use g729 o g723 codec over you VPN this will consume less band results are good.
What is the delay between NY and Miami ?

 

[nitz01]

pluigi,
the delay is 63 ms between Miami and NY and 150 ms between Miami and Italy. Although the delay with Italy is quite a bit, we currently have a few Avaya 4606 IP Phones there that work flawlessy with the 406 in Miami. Pluigi are your customers using any QoS?

 

[crashtest1000]

We recently did some testing with Viola's product, NetAlly we used this at sites to generate VoIP traffic on the network to the level that we expect during the day and evening. NetAlly is able to set p multiple calls using the codec you want i.e. G729 or G711. We did this over a month and it gave us a good idea of the sort of quality we would get over our network if we implemented VoIP. And the impact it would have on our data speeds
We were also able to find a couple faults which we were able to fix.

It all comes down to what sort of calls you are putting over that network if its OK for the odd call to drop or speech to echo and fade in and out then go for it but if this is not acceptable to your company!! You need to look at a QOS policy that you can rely

PS we have found a ping test is not telling us a lot about quality of VoIP calls