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Creating HFA/SIP Locals - STMI4 3
- Thread starter Hertz
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OK, to start with you would have the board installed in the system and showing READY in BCSU with all the board config done, IP address assigned, etc... (using CGWB)
There should be nothing existing on the board.
You will use BFDAT to assign a partition to the board. Once you build stations on the board if you want to change anything you will have to remove everything you built.
DIS-BFDAT before you start to see if there is already an FCTBLK made for what you want. If there is you can assign that to the board and you don't have to make a new one!
OK, with the STMI board, if you are using pure HFA you can provision up to 240 phones.
If you do anything else the board cannot (that I know of) be configured beyond 120 ports.
So in my case I have boards that have 100 HFA and 20 SIP, or 110 HFA and 10 SIP at my small sites. I use SIP mostly for conference phones or SIP to Analog converters at remote IP-only sites.
Now keep in mind that no matter how many devices you have configured on the board, the board only has 60 B Channels. You have to assign B Channels to your partitions.
So in my case of 100 HFA and 20 SIP I have 50 B channels allocated to HG3530 (HFA) and 10 B channels allocated to HG3540 (SIP Devices) (trunks are HG3550 I think).
Each B channel can "support" 2 devices in a mixed configuration or 4 in an HFA only configuration. for 110 HFA and 10 sip it would be 55/5 B channels.
The other thing to remember is Timeslots. Timeslots are very important. There are 128 timeslots on each side of the NCUI card (or LTUC card locally) with a total of 256 per shelf. The timeslots are used any time a phone is taken off-hook, ringing, a call is going out a trunk, etc. So keep in mind when you are adding or configuring a card in a shelf that you have to have some fairly reliable estimate of how much traffic is going to be on a shelf.
So in other words, just because you build out a STMI card for 240 phones does not mean you can have 240 phones off the hook at once - you have to look at everything else on the shelf. Is there a PRI or T1 card on there? That could count for 24, Analog board, SLMO board, more than one STMI card? That determines whether the next person who picks up the phone gets dial tone or not (that is before trying to place a call).
Now consider on an IP-based AP Shelf that the NCUI card either has 60 or 120 channels depending on which version you have, and that determines the maximum number of simultaneous "call" events that can even enter or leave the shelf. That is why on the newer versions of the 4K they developed DMC (Direct Media Connect). This can help save resources when one IP phone calls another IP phone internally - initially to set up the call there are a number of resources used as you go off hook, make the call, it gets to the shelf, gets signalled to the phone and the phone goes off hook. with DMC the two phones will then initiate a peer to peer connection and will drop all the other resources they were using except a signalling connection that remains between them so the system can keep track of them....
Anyway, if you already knew all that, sorry. Someone else might get benefit from it, and I needed the memory refresher!!
You should have enough here to figure it out.
Don Bruechert, Voice Comm Analyst II
CareTech Solutions @ Holy Family Memorial
Manitowoc, WI, USA
There should be nothing existing on the board.
You will use BFDAT to assign a partition to the board. Once you build stations on the board if you want to change anything you will have to remove everything you built.
DIS-BFDAT before you start to see if there is already an FCTBLK made for what you want. If there is you can assign that to the board and you don't have to make a new one!
OK, with the STMI board, if you are using pure HFA you can provision up to 240 phones.
If you do anything else the board cannot (that I know of) be configured beyond 120 ports.
So in my case I have boards that have 100 HFA and 20 SIP, or 110 HFA and 10 SIP at my small sites. I use SIP mostly for conference phones or SIP to Analog converters at remote IP-only sites.
Now keep in mind that no matter how many devices you have configured on the board, the board only has 60 B Channels. You have to assign B Channels to your partitions.
So in my case of 100 HFA and 20 SIP I have 50 B channels allocated to HG3530 (HFA) and 10 B channels allocated to HG3540 (SIP Devices) (trunks are HG3550 I think).
Each B channel can "support" 2 devices in a mixed configuration or 4 in an HFA only configuration. for 110 HFA and 10 sip it would be 55/5 B channels.
The other thing to remember is Timeslots. Timeslots are very important. There are 128 timeslots on each side of the NCUI card (or LTUC card locally) with a total of 256 per shelf. The timeslots are used any time a phone is taken off-hook, ringing, a call is going out a trunk, etc. So keep in mind when you are adding or configuring a card in a shelf that you have to have some fairly reliable estimate of how much traffic is going to be on a shelf.
So in other words, just because you build out a STMI card for 240 phones does not mean you can have 240 phones off the hook at once - you have to look at everything else on the shelf. Is there a PRI or T1 card on there? That could count for 24, Analog board, SLMO board, more than one STMI card? That determines whether the next person who picks up the phone gets dial tone or not (that is before trying to place a call).
Now consider on an IP-based AP Shelf that the NCUI card either has 60 or 120 channels depending on which version you have, and that determines the maximum number of simultaneous "call" events that can even enter or leave the shelf. That is why on the newer versions of the 4K they developed DMC (Direct Media Connect). This can help save resources when one IP phone calls another IP phone internally - initially to set up the call there are a number of resources used as you go off hook, make the call, it gets to the shelf, gets signalled to the phone and the phone goes off hook. with DMC the two phones will then initiate a peer to peer connection and will drop all the other resources they were using except a signalling connection that remains between them so the system can keep track of them....
Anyway, if you already knew all that, sorry. Someone else might get benefit from it, and I needed the memory refresher!!
You should have enough here to figure it out.
Don Bruechert, Voice Comm Analyst II
CareTech Solutions @ Holy Family Memorial
Manitowoc, WI, USA
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