Connecting BCM450 & 50's - SIP vs. VoIP H.323

[1800laphones]

Hello,

I've done some searching around but haven't quite found the answer I was looking for.

Our company is taking over a customer that currently has 4 locations (BCM 450 @ the main, BCM 50's @ the other 3). They are currently using SIP Gateways to connect all of the locations, but they run into all sorts of issues when using the intercom feature (Dead air, static, etc).

They have a T1 for data at each location.

We have only ever installed VoIP Gateways keycodes on BCM systems with no issues.

Would eliminating the SIP, and installing VoIP Gateway keycodes solve their issue?

Thanks for any help.

 

[ECartman]

Hard to tell if it will eliminate the issues. You would need to investigate as to why they are happening.

For example, if they are good gateways/properly configured. It may be a network problem.

You could get try and buy keycodes for the BCMs and network them for 60 days. Then see if it persists.

 

[1800laphones]

Got it. Thank you.

So there is no known or common problems when using SIP?

I guess we will need to take a better look at their configuration before asking them spend $3-$4k in keycodes for a "hopefully.

 

[ECartman]

Usually any issues I've had with SIP/H323 have either been bad config or network related. I would start with the network if I were you. If the network aint up to it, it will never be right

 

[1800laphones]

While I was scouring the internet, I actually found several different posts with people recommending sticking to the H323, and only using SIP when connecting to a different PBX (asterisk or similar), but no one ever really ever specified why, merely because it is "tried and true.

 

[ECartman]

Apples and oranges really

 

[dgmf]

What sort of bandwidth do you have between sites? I agree with ECartman you really have look at the network... that's where you'd get the most bang for your buck.

...that being said I find H323 to be more stable. The short reason is that it's simpler, less possible points of failure.

The long answer is in this post:

http://www.packetizer.com/ipmc/h323_vs_sip/

I'm sure you probably found it during your scouring.

 

[dgmf]

Oh forgot to mention... I'm currently working on SIP project and most techs I've talked to have warned me about weird SIP issues like you're describing.

 

[yankblan]

If you're not in charge of the network where you are setting up, SIP could be a nightmare... as h323, all you need is your BCMs addresses if your VPN is already setup.

 

[gberger]

Personnaly i prefer using H323 in a Nortel environment(Bcm50's,Bcm450's,Cs1000's) it works everytime without glitches, i cannot say the same for SIP trunks...