basic theory

[codecrank]

Hello,

Can someone please explain what exactly a "crystal" means ? I'm trying to get the big picture so the little bits I know start making sense. Maybe someone can point me in the right direction. Below is the output of "config all" on my pbx. I recognize my boards, but I don't understand what the rest is.

Thanks !

OXE L + 5.1

Code: Select all

Cristal 0 :

   +-------------------------------------------------------------------+
   | Cr | cpl| cpl type   | hw type   |  cpl  state  |  coupler ID     |
   |----|----|------------|-----------|--------------|-----------------|
   |  0 |  6 |     CPU_CS |---------- |   IN SERVICE |   BAD PCMS CODE |
   +-------------------------------------------------------------------+


Cristal 1 :

   +-------------------------------------------------------------------+
   | Cr | cpl| cpl type   | hw type   |  cpl  state  |  coupler ID     |
   |----|----|------------|-----------|--------------|-----------------|
   |  1 |  0 |         GD |---------- |   IN SERVICE |   BAD PCMS CODE |
   |  1 |  2 |     UAI 16 |---------- |   IN SERVICE |   BAD PCMS CODE |
   |  1 |  3 |  SLI 16(Z) |---------- |   IN SERVICE |   BAD PCMS CODE |
   |  1 |  4 |     UAI 16 |---------- |   IN SERVICE |   BAD PCMS CODE |
   |  1 |  5 |  SLI 16(Z) |---------- |   IN SERVICE |   BAD PCMS CODE |
   |  1 |  6 |     PRA T1 |---------- |   IN SERVICE |   BAD PCMS CODE |
   |  1 |  8 |         CS |---------- |  CALL SERVER |   BAD PCMS CODE |
   +-------------------------------------------------------------------+

   --- Inter Crystal Topology ---

   +-------------------------------------------------------------------------+
   | CR | CPL  Type   Role          Free/Tot         Role    Type   CPL | CR |
   |-------------------------------------------------------------------------|
   | 01 | 00 -     GD (MAIN   )  ---  08/08 ---  (  INT_A)  INTIPA - 02 | 19 |
   |-------------------------------------------------------------------------|

Cristal 18 :

   +-------------------------------------------------------------------+
   | Cr | cpl| cpl type   | hw type   |  cpl  state  |  coupler ID     |
   |----|----|------------|-----------|--------------|-----------------|
   | 18 |  0 |         GD |---------- |   IN SERVICE |   BAD PCMS CODE |
   | 18 |  1 |       4645 |---------- |   IN SERVICE |   BAD PCMS CODE |
   +-------------------------------------------------------------------+

   --- Inter Crystal Topology ---

   +-------------------------------------------------------------------------+
   | CR | CPL  Type   Role          Free/Tot         Role    Type   CPL | CR |
   |-------------------------------------------------------------------------|
   | 18 | 00 -     GD (MAIN   )  ---  24/24 ---  (  INT_A)  INTIPA - 02 | 19 |
   |-------------------------------------------------------------------------|

Cristal 19 :

   +-------------------------------------------------------------------+
   | Cr | cpl| cpl type   | hw type   |  cpl  state  |  coupler ID     |
   |----|----|------------|-----------|--------------|-----------------|
   | 19 |  1 |  UA_FICTIF |           |   IN SERVICE |    NO PCMS CODE |
   | 19 |  2 |     INTIPA |           |   IN SERVICE |    NO PCMS CODE |
   | 19 |  3 |     INTIPA |           |  OUT OF SERV |    NO PCMS CODE |
   | 19 |  4 |   Z_FICTIF |           |   IN SERVICE |    NO PCMS CODE |
   +-------------------------------------------------------------------+

   --- Inter Crystal Topology ---

   +-------------------------------------------------------------------------+
   | CR | CPL  Type   Role          Free/Tot         Role    Type   CPL | CR |
   |-------------------------------------------------------------------------|
   | 19 | 02 - INTIPA (INT_A  )  ===  08/08 ===  (   MAIN)      GD - 00 | 01 |
   |-------------------------------------------------------------------------|
   | 19 | 02 - INTIPA (INT_A  )  ===  24/24 ===  (   MAIN)      GD - 00 | 18 |
   |-------------------------------------------------------------------------|

[zanex]

your system is common hardware not crystal architecture - you can tell this by the CS in crystal 0
The shelves are called crystals for both architectures
If you want more info i will try to dig up some docs on how the backplanes works

[cavagnaro]

Common Hardware is the gray color like a big HP CPU, Crystal Hardware is like a small refrigerator or even the size of one of them, white color.
The main difference is that on Crystal Hardware each board card communicates with the other, so if you have 3 cards :

1 -> 2
1 -> 3
2 -> 1
2 -> 3
3 -> 1
3 -> 2

In this way no need for intermediates and the architecture is stronger.

On Common Hardware they sacrificed this great concept in forward of more cheap hardware. So you lose this and the communication is done by the GD and CS cards. (If i don't remember wrong)

[tincho.rn]

Some shelfs (in your case common hardware) exist (0 and 1), the other are fictitious. For example crystal 18 is use for voice mail solution 4645. Others are use for fictitious users, like a UA_FICTIF and Z_FiCTIF in crystal 19.
Of course you can have many physical shelf (crystal or common hardware).
Regards.

[codecrank]

Makes sense, cristal 1 has all my couplers/cards, and I use shelf 1 when I setup users using those cards. Cristal 18 and 19 are "software shelves" , 18 handles voice mail, and 19 handle virtual sets.

I've heard many times that the omniPCX can scale up to 50,000 users, I assuming that this is only true when using cristal hardware, correct ?

Is common hardware scalable to multiple L or S racks ?

Thanks

[Eliott_DUP]

I've heard many times that the omniPCX can scale up to 50,000 users, I assuming that this is only true when using cristal hardware, correct ?

Is common hardware scalable to multiple L or S racks ?

Yes and yes.
You can also mix common and crystal hardware in one system.
You must also keep in mind, that the OXE (A4400) can support just 15.000 users in a single node.
You will need a network to have 50.000* users.

*) From R8.0 = 100.000 extensions

[tincho.rn]

When you have more than 500 users (in sigle node configuration), you use Crystal hardware. Of course we are talking of a TDM/IP configuration. If you have a full IP configuration, using a apliance server would be ok.
In a single node configuration from the 15000 users, only 5000 can be TDM and the others IP.

[codecrank]

thanks everyone for enlightening responses !

[surya]

Hi,

I am new to this domain and to my job also. I would like to know the basic theory of how telecommunication system works and basic theory of how OmniPCX systems work.
In my office OmniPCX Crystall Hardware with 3 call servers was installed. we are not given any training actualy and here there are no documents avaliable for learning. So, Please tell me
how to start and wat to read.

regards,
surya.

[L_lefante]

Hi,

Complete documentation is available in this post.

viewtopic.php?f=322&t=11726

Just find out your system release and then download the one that you need.

regards,