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Old 7th October 2015, 15:53   #61
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Default Re: How to terminate ISDN E1

@Turbanator - I stopped using MPLS because of 2 main reasons -
1. Cost was turning out to be more than having internet at each location and then doing VPN (internally managed)
2. Initially I had started my VoIP journey with 3Com and even today I have noticed that SIP does not perform well with VPN encryptions. I faced lot of slack due to VoIPing.

Additionally I also now have cheaper backup bandwidth which kick in when primary does down. In case of MPLS, internet and MPLS used go down together leaving us in local Cloud setups. I hope I answered your question. I would recommend going for internet with locally managed VPN and use the capital for additional backup bandwidth.
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Old 7th October 2015, 17:29   #62
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Default Re: How to terminate ISDN E1

Originally Posted by Turbanator View Post
As of now our 3 offices are connected on 4 Mpbs Leased lines via firewall . Airtel has proposed us a 2 Mpbs line at 2 branches & 4 Mpbs at Server location with One Internet link of 4 Mpbs - I want to understand if this MPLS setup is better than our self created VPN ?
Stick with MPLS if covered by your budget.

Originally Posted by arun_sharon View Post
By ACD i meant any call control engine be it CM or LYNC. since these now have the capability of automatic call distribution we usually call them as ACD.
Please allow me to correct you then. Neither CM nor Lync are ACDs, they are PBX. PBX provides signalling, dial plan (call control), stations (extensions) & trunking (gateway).

ACD is the ability to define call queues where agents can login and take calls from callers who are waiting in those queues. ACD is an optional PBX feature, Lync provides a very basic one, but Avaya CM provides a powerful one. Often PBX customers choose not use the built-in ACD and opt for third party ACDs that give special features. I myself have designed and overseen the development of an universal ACD than can work with Avaya CM & IP Office as well as Lync.

Originally Posted by arun_sharon View Post
Audio codes SBCs (eg Mediant 1000 E-SBC) are capable of accepting both PRI and SIP along with SIP conversion and in a hybrid environment this makes flexibility as it will not lock you to any vendor.
Again, Gateway and SBC are two different functions. Gateway does signalling and media conversions from one protocol to other, like TDM to VOIP. SBC is mainly a firewall for VOIP, since traditional firewalls don't handle VOIP packets that well. SBC mainly does security, and optionally transcoding. I do have a Mediant 1000 (part# M1K-D1) that does only gateway function.

But AudioCodes now offers both function in a single box muddling the distinction. It is just like how most corporate network firewalls can do routing these days, although those are two different functions.

Originally Posted by arun_sharon View Post
If you have multi site deployment involving CUG and PSTN it is mandatory to have CDR retention irrespective of the solution that you provision. this is for DOT to do audit in circumstances where you are flagged for toll bypass violations.
I want to see a law/regulation that states this. The RTI link I provided earlier says no such things. The link from Microsoft site is not a legal document.

Last edited by Samurai : 7th October 2015 at 17:33. Reason: typo
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