DSP usage

[nortelcs100e5]

Hi all, i need some info regarding MGC DSP usage of CS1000E. I mean with different call scenario. Can somebody answer these separately whether DSP is use or not in these call setup.

(1) Analog to analog ext call within cabinet or cabinet to
cabinet-->DSP is use or not?

(2) Incoming DID call through PRI on analog extension-->DSP
is use or not?

(3) When an analog or digital extension access PRI for
Dialing out then DSP is use or not?

(4) Incoming call from PSTN(CO line) to operator and
transfer to any analog or digital ext in this case DSP
is use or not?
(5)When i setup conference on MICB then this conference
use DSP or not?
(6)Call from PSTN or from internal ext to Call Pilot 600r
uses DSP or not?

I have 4 cabinet system with 195 analog, 24 digital extension and 6 PRI`s, i got 4 MGC with Five 32 port DSP daughter cards, how do i distribute these 5 daughter board in these MGC cards also pls advice how do i distribute these PRI card in these 4 cabinets.

Regards

 

[BrokenRecord2]

Not enough info to answer with a short yes or no but this will answer you questions.

You use a DSP anytime you go from one cabniet to the other on each end with a TDM to TDM call. Two DSP channels total per call.

You use a DSP any time you go from TDM to IP or IP to TDM. One DSP channel per call.

If the call is TDM to TDM in the same cabniet no DSP's

If the call is IP to IP no DSP's

TDM = Digital phone, analog phone, digital trunk (PRI) and analog trunk. CallPilot, MIRAN, MICB use digital ports so they also need DSP's.

IP = IP Phones, SIP Phones, SIP trunks and H.323 trunks

You can spreed out PRI across cabniets but just make sure they are non blocking cabniets. 32 and 96 ports daughter boards on the MGC card. I personally would just put in a 32 and 96 ports DSP card in every cabniet so I never would have to worry about it again.

 

[nortelcs100e5]

The situation is that i got Five 32 port DSP D/board with 4 MGC card and I have 4 cabinet system with 195 analog, 24 digital extension,4 XUT cards and 6 PRI`s, Now can somebody advise how can i distribute these all cards with 4MGC and Five 32 port DSP D/Boards.
Regards

 

[911guru]

You have DSP resources on your MCG cards as well (up to 128 max on each MGC Card).

Do you know how many you have there? You need to balance the system according to the estimated use of the DSPs.


911Guru

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[nortelcs100e5]

Hi Pal, look i got Five 32 port dsp daughter board with 4 MGC card and need yours assistance how to distribute thes all PRI/Analog/XUT/6 PRI in these 4 cabinets and distribution of Five 32 port dsp D/board. I am really stuck on its engineering and i need to avoid any blockage situation.
Need yours help.

 

[allenmac]

Given the quantities stated earlier, you should have the following hardware:

4 Media Gateway Controllers
5 32 port DSP daughterboards
13 Analog Line Cards
4 Universal Trunk Cards
2 Digital Line Cards
6 PRI cards
1 (or more) CPPM Call Server(s)
1 (or more) CPPM and/or COTS Signaling Server(s)
2 (or more) clock controller daughterboards

If I assume you have a single CPPM Call Server, and a single CPPM Signaling Server, then you have a total of 25 circuit cards.

You also stated that you had only 4 cabinets - each cabinet only supports 4 cards, so you are 3 cabinets short.

Obviously, you will have 3 Media Gateway Controllers with 1 daughterboard (32 DSPs), and 1 Media Gateway Controller with 2 daughterboards (64 DSPs).

As for the PRI's - that will also depend on the number of clock controllers you have, as each MG with a PRI must have a clock controller.

 

[nortelcs100e5]

allenmac , these are 11c Cabinet having 10 slot in each, it is also of SA config ,no HA. Cant i have 40 slots in 4 cabinets??? If yes then please advise how can i distribute cards and DSP D/brds in between these cabinets.

 

[allenmac]

Sorry,

It was not clear from your postings that this is a cabinet option system.

You can absolutely use all 10 slots per cabinet. You will still need to have 3 cabinets with 1 MGC & 1 DSP daughterboard, and 1 cabinet with 1 MGC & 2 DSP daughterboards.

With the number of devices that you want to support, you will still not be able to configure in a non-blocking configuration, as you have listed a configuration using up to 389 TDM units, and a total of 160 DSP's.

You need to have some idea of the usage patterns of the different devices, then work from that model to distribute your resources accordingly.

For instance, what amount of usage do you expect for the analog devices. If you think they will be frequently used, then you need to space them out between the cabinets, if not, then you can have a higher density in each cabinet because it is unlikely that they will require a lot of DSPs simultaneously.

The number of clock controllers will be a big factor in determining how you distribute your PRI's, because each cabinet with a PRI must have a clock controller. IF you have only 1 clock controller, then all your PRI's must be in the same cabinet.

Follow this logic to determine for yourself what the best distribution of resources will be. Not knowing the usage patterns, or call volume, an intelligent response cannot be made.

 

[nortelcs100e5]

I am planning to use these cards as under please advise if it is OK.(This PBX have almost all TDM stations and so mostly TDM resources will be use,another thing i didnt mentioned that i got one 96 and four 32 port DSP d/brd with this)

(1) First cabinet= MGC with 96 DSP D/brd+6 PRI cards+Mgate
card.
(2) 2nd Cabinet=MGC with two 32 port DSP D/board+9 MWLC and
one DLC card.
(3) 3rdand 4th Cabinet=In both cabinet each MGC with single
32 ports DSP D/brd and remaining
cards will be distribute evenly
between these 2 cabinets.

Please comment/advise if i am doing right..

 

[tnphoneman]

With the hardware hou have listed there is no way to do a non blocking configuration of this switch. Best you can do is 32 ports between media gateways.

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[allenmac]

In the above configuration:

Cabinet 1 will be blocking (138 b-Channels + up to 32 digital channels on MGate card = max 170 TDM units sharing 96 DSPs)

Cabinet 2 will be blocking (144 analog lines + 16 digital lines = 160 TDM units sharing 64 DSPs)

Cabinets 3 & 4 will be blocking:
One cabinet will have 32 analog lines + 16 digial lines + 16 analog trunks = 64 TDM units sharing 32 DSPs

One cabinet will have 32 analog lines + 16 analog trunks = 48 TDM units sharing 32 DSPs


Several questions / comments I have are:

What are the universal trunks for? can they be grouped into one cabinet?

I would try to make the cabinet with the PRI's as non-blocking as possible, and spread the other resources evenly between the other 4 cabinets, concentrating cabinets with lesser used TDM resources with a higher density of those cards.

 

[tnphoneman]

You can only have 4 PRI's per cabinet. You can not have a PRI in slots 7-10 only 1-4. Just like the Option 11 Mini.

Signature===========================================
Artificial Intelligence Is No Match for Natural Stupidity.

The latest survey shows that 3 out of 4 people make up 75% of the population.

The original point and click interface was a Smith & Wesson.

Red meat is not bad for you, it is the green fuzzy meat that is bad.

 

[tnphoneman]

Where did the 96 port DSP and media card come from? Not on the original list of parts.

Here is what I would do

Media Gateway 1
96 port DSP on MGC
3 T1 Cards max of 72 ports
1 Digital Line Card Max of 16 ports
1 Universal Trunk Card Max 8 ports
1 cppm

Total of 96 possible ports

Media Gateway 2
2 each 32 Port DSP on MGC
1 Each 32 port media card
3 T1 Cards max of 72 ports
1 Digital Line Card Max of 16 ports
1 Universal Trunk Card Max 8 ports
1 CPPM

Total of 96 possible ports

Media Gateway 3
2 each 32 Port DSP on MGC
7 each Analog line card
1 each universal trunk card

120 possible ports and 64 dsp paths

Media Gateway 4
1 each 32 port dsp
1 each universal trunk card
5 each analog line card

88 possible ports and 32 dsp paths.

Cabinets 1 and 2 will be non blocking. If it were me I would put a 96 and 32 in media gateway 3 and move a 32 port to media gateway 4.

Non blocking is still not possible with the hardware you have but this is as close as we can get you.


Signature===========================================
Artificial Intelligence Is No Match for Natural Stupidity.

The latest survey shows that 3 out of 4 people make up 75% of the population.

The original point and click interface was a Smith & Wesson.

Red meat is not bad for you, it is the green fuzzy meat that is bad.

 

[curtismo]

I was told in a traing class our local INNUA group put on that you cannot use slot 10 for anything but a CPPM card.

Also, tnphoneman I thought you could have DTI/PRI cards in slots 1-8 under 5.0? I do know that if you have them in other cabinets, there will have to be a clock controller in each cab.

 

[tnphoneman]

Sorry I missed that it was using the old option 11 cabinet. I think this guy needs to get someone involved that knows what they are doing. I recieved an email from another forum requesting step by step instructions. Done with this one now. My posting still stands though for getting as close to non blocking as possible. given the scattgered information supplied here.

Signature===========================================
Artificial Intelligence Is No Match for Natural Stupidity.

The latest survey shows that 3 out of 4 people make up 75% of the population.

The original point and click interface was a Smith & Wesson.

Red meat is not bad for you, it is the green fuzzy meat that is bad.

 

[nortelcs100e5]

Hi Thanks all for helping, I am going to do as tnphoneman advising, I was going into depth in this posty just because i wants to understand more from this forum, though i am also reading NTP`s but it is more easier to learn practical experience from this forum. Thanks and regards

 

[BrokenRecord2]

What does the bayface layout say from NOrtel when you ordered this?

 

[tnphoneman]

It sounds more like an upgrade to me. I don't think you can get these cabinets any more.

Signature===========================================
Artificial Intelligence Is No Match for Natural Stupidity.

The latest survey shows that 3 out of 4 people make up 75% of the population.

The original point and click interface was a Smith & Wesson.

Red meat is not bad for you, it is the green fuzzy meat that is bad.

 

[curtismo]

This is a good discussion since I will be going through this probably next year, due to other projects pushing phone upgrades off the plate. I have a similar situation haveing two three cabinet systems with PRI and COT trunks and Call Pilot on each one, along with IP sets. I could see a situation where DSP resources could be an issue with all of these trunking resources in the first cabinet, and the other cabinets filled with digital line cards, and that there might have to be a redistribution of some stuff to provide the non-blocking that the current SSC provides.