BCM 50 SITE-TO-SITE QUESTIONS ???

[dcommusa]

I have a customer that expanded to a new site & its time for a new system-I'm thinking BCM 50......However I have some questions!!!!Proposed parameters:
Main site= 12-T7316e,4-8 pots/analog trunks,12 v.m. seats
Remote site= 6-T7316e,4 pots/analog trunks,8 v.m. seats

The customer wants to be able to dial DN's from site-to-site & transfer in-bound calls back & forth.(They also want to external page back & forth)(main site is using cable for internet & remote=DSL)

Question's

1.Do I need mcdn/keycode to dial site-to site?
2.Do I need IP trunk keycodes for dialing site-to-site?
3.Does their IT person need to do vpn/firewall @ each site
for this config?
4.Would BCM 50 @ main site & IP phones @ remote be a better option?
5.If they get a call @ the main site & park it-can they pick it up @ the remote side?

Any suggestions/draw backs/ideas would be appreciated!!!!

THANK YOU

 

[acewarlock]

1. NO
2. YES
3. I don' think so, as I never had to at my 60 sites
4. NO
5. NO

Someone may disagree with me on some of these, but this is my Opinion.




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.

 

[Deweyhumbolt]

I'm backing your play, ace.

Adversity is Opportunity

 

[countrytime]

While a VPN isn't absolutely required as long as you have a static IP address from your ISP, you SHOULD use a VPN for security. Also, I don't believe you'll be able to do the remote external paging without some sort of converter at each site. MCDN might make things work smoother.

 

[Crowtalks]

What kind of system are you working with at site A?

If this is a campus setup where they are less than 3000 feet apart, then your digital sets should work.

If you went with a BCM50 at the remote site and wanted to network the systems, you need to remember that VoIP trunking doesn't support paging and you would need MCDN to set up routing across the private network. Without MCDN, it will pass public received digits but not private received digits.

If you used VoIP phones remotely (assuming you have static assignments), then you run across the 911 issue at the remote site.

 

[dcommusa]

A BCM 50 would be on each side(not a campus)
If they want to dial dn's from main to remote do they need mcdn keycode ?-(each site will have v.mail keycodes)
They want to transfer a in-bound pots call from main to remote & vice-versa & dial dn-to-dn.
What does the ip trunk keycode allow?
What does the mcdn keycode allow?
What keycodes are needed & how hard to set up?
Any down side?

 

[Crowtalks]

OK.

You are talking about a private network using CDP where you use different leading digits in each extension range as the pilot digit in your private network routing. The IP trunk keycodes unlock the IP trunks in each system. The IP trunks start at line 001. A couple of IP trunks on each end (two times two) may be sufficient to pass two-way traffic between the sites. You use target lines, routes and destination codes at each site to tell each system where to send the incoming digits. Your target lines have public and private received numbers that you assign your four digit dns to. MCDN is a Nortel protocol for private networking. To transfer and call forward between systems, just simply means, choosing the allow redirect in CAPABILITIES on a per-station basis.

Acewarlock may be correct in saying you don't have to have MCDN, and just use the public received field in each target line to route your incoming calls to the correct station.

These systems don't recognize incoming digits, regardless of their length, as internal digits so you need the target lines to direct them to the right place.

The downside is the codec must be the same end-to-end and there is no paging across IP trunks, you would have to use a PSTN trunk for that.

 

[dcommusa]

So if the main site site gets a in-bound pots call & needs to transfer to the remote side-the operator can press "transfer + dn & hang-up?
Can you do voice call to the remote side?
It would be nice to be able to park a call @ the remote end + page.....
Is mcdn is only for centralized voice mail/private networking?
Would their be any advantage with using mcdn?
What about using a analog dn @ the remote side to access paging from the main?
The various page manufactures make IP & analog to voice paging interfaces.(Valcom,Bogen etc.)

 

[countrytime]

The transfer works as you indicated with or without MCDN. Where MCDN helps you is through the ability to stop "hairpinning" a situation where a call originates at sits A, gets transferred to site B, theb gets transferred back to site A. Without MCDN, all the facilities remain tied up for the duration of the call. With MCDN the two VoIP trunks are released as the call has returned to the system where it originated. Also, with MCDN, the site to site calls are treated as internal calls whereas without it they receive external call treatment. You would need the IP paging converters at each end with or without MCDN to do remote paging.

 

[Crowtalks]

Wait.

You can get an IP paging converter to use across VoIP trunks?

 

[nooop]

Hey, on this same subject. I have 2 sites with BCM 50. Both have Ip trunks. I am doing 3 digit dialing 1 way perfectly. The site that I can dial uses POTS lines, and I have target lines set to the DN and private recieved is 2 digits. Works great.

Problem is on the other site. It has a PRI, and 7 digits sent down as public recieved. If I put a 2 digit private recieved number it passes backwards! If I call the 7 Digit DID using the leading digit of the IP trunk route, it calls accross the trunk, but does not help me at all in the 3 digit dept. If I was taking 4 digits down from the LEC, I would just use 4 digits and match them. What can I do now? I have MCDN on 1 site only. Would it help to license MCDN on the other?

Thanks

 

[Crowtalks]

nooop It would be better to start a separate post for this

 

[nooop]

OK. Thanks

 

[dcommusa]

countrytime (or anyone else) - I'm looking to setup a BCM 50 at Site A and B.

I need to transfer calls from Site A to B and also 3 digit dial back and forth.

With MCDN do you need also need VOIP trunks?

If I were to only to do 2 or 4 VOIP trunks on each BCM 50 at Site A and B what are the drawbacks?

What is the true advantage of MCDN?

If I were to NOT install a BCM 50 at Site B and only hang the Nortel IP 1230 Phones (about 10 IP Phones) off of a Site to Site VPN connection back to Site A would I only need IP Phone Keycodes on the BCM 50 at Site A and then NO MCDN/VOIP Trunks on the BCM 50 at Site A?

With IP Phones at Site B can I page from Site A to the IP Phones at Site B as a seperate page zone and would my only option for external paging be a form of external IP page adapter?

 

[Deweyhumbolt]

Dude, you ask to many ?'s. It sounds to me like you should just have IP sets off a VPN. You avoid MCDN, VoIP trunk keycodes, and your paging/voice call issues. The only downside is no local trunk access to the outside world. If the VPN tunnel goes down, their dead in the water. Plus, you'll need some bandwith.

Adversity is Opportunity

 

[countrytime]

Read my previous answer as to the advantages of MCDN. Whether or not you use it, you'll still need the VoIP trunks to tie two BCMs together. If you choose to deploy just IP sets at the remote site, you need only purchase an IP client license for each phone at the remote and you can page the sets by internal zone. For external paging, you'll need an IP adaptor at each end or you can use a dial-up adaptor connected to a loop-start trunk at each system. I've used Centrex lines for this so I only need to dial the Centrex intercom number connected to the remote site to page them. You cannot use the page feature to do this, however.

 

[dcommusa]

Can you put direct trunk appearences on IP PHONES?
What model # IP phones are recommended?
What do you think of the 1220/1230 models?

 

[countrytime]

Yes, you can put the trunk app. on an IP set just as you would a digital set. I prefer the old I2004 over the 1100 series sets just because they are proven workhorses and provide good value for the money. Honestly, I have no experience with the 1200 series sets, so I can't give any guidance there.

 

[dcommusa]

Are the I2004 sets dis-continued?

 

[countrytime]

No, the I2004 sets are very much still supported. I hear rumors that they are to be discontinued but so far they're still around.