What is IPC and how does it work?

LaraC said:
Thank you for commenting, this comment doesn't help me understand IPC better. :(
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Oh, To answer your earlier question - Running at full capacity on an IPC will not serve any harm to the IPC Network.

However, It will just increase congestion on that Specific IPC Network and the end user (Clients) will experience higher latency, and slow throughput on their connections.
 
Lynx_ZA said:
Oh, To answer your earlier question - Running at full capacity on an IPC will not serve any harm to the IPC Network.

However, It will just increase congestion on that Specific IPC Network and the end user (Clients) will experience higher latency, and slow throughput on their connections.
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Cool; it means that Telkom have sufficient reserve capacity on their network which they can make available to us. Thank you. :)
 
LaraC said:
Will increasing the throughput of connections not put additional strain on it?
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If you increase the throughput at an IPC which is at full capacity, It will alleviate the congestion and lower the strain on the network.

Think about it like this.

You have a freeway which is completely gridlocked and no cars are moving, If you add another lane on the freeway, cars will start to move and the congestion will ease.
 
Lynx_ZA said:
If you increase the throughput at an IPC which is at full capacity, It will alleviate the congestion and lower the strain on the network.

Think about it like this.

You have a freeway which is completely gridlocked and no cars are moving, If you add another lane on the freeway, cars will start to move and the congestion will ease.
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Do you have a image that you can post here showing the national rings, regional rings and local rings and how the data traffic from a specific exchange will flow from, for example, PE to Rustenburg?
 
Lynx_ZA said:
If you increase the throughput at an IPC which is at full capacity, It will alleviate the congestion and lower the strain on the network.

Think about it like this.

You have a freeway which is completely gridlocked and no cars are moving, If you add another lane on the freeway, cars will start to move and the congestion will ease.
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Is the ability to increase throughput available to ISP’s or will they be required to purchase additional IPC?
 
LaraC said:
Is the ability to increase throughput available to ISP’s or will they be required to purchase additional IPC?
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ISPs will need to purchase additional IPC capacity if they are at full IPC Capacity.

Believe it or not, Telkom take a few days at maximum to allocate additional IPC to ISP's.

Many ISP's however say they are waiting on Telkom to do the upgrade etc when the order has not even been submitted yet.

The whole waiting for months for the IPC capacity to be upgraded is complete and utter horse sh*t.
 
Lynx_ZA said:
ISPs will need to purchase additional IPC capacity if they are at full IPC Capacity.

Believe it or not, Telkom take a few days at maximum to allocate additional IPC to ISP's.
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Crystal Web gave an explanation how the ISP’s calculate how much capacity they require.
I can understand that if an ISP suddenly experience a huge influx of new clients they can exceed the model they work with.
It is also good to know that additional IPC can be obtained if needed and that the Telkom network is not under pressure.
 
LaraC said:
Crystal Web gave an explanation how the ISP’s calculate how much capacity they require.
I can understand that if an ISP suddenly experience a huge influx of new clients they can exceed the model they work with.
It is also good to know that additional IPC can be obtained if needed and that the Telkom network is not under pressure.
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In that situation I agree that you could be cought off guard.

You should then only have about 2 - 3 Days of congestion after you have submitted the order for additional IPC Capacity and you will be back to normal.

I'm not sure where ISPs get told that their capacity will be upgraded in a months time unless of course the ISPs are talking rubish as a delaying tactic.
 
Lynx_ZA highlighted a contentious topic with regard to the purchasing of IPC.

  1. How often does ISP’s review their business model to be in line with the number of customers they have?
  2. Is it possible for ISP’s to purchase additional IPC on short notice to address shortfalls they may have?
  3. Does Telkom Wholesale limit the minimum amount of IPC which can be purchased?
  4. What is the minimum period IPC can be purchased for?
  5. Does Telkom Wholesale allow ISP’s to purchase additional IPC for specific days when they expect to encounter shortfalls? (e.g. Month ends or with special events)
 
Lynx_ZA said:
Sorry, When I said "Cable" I meant fibre.

Remember a single fibre strand can carry up to 300Gbps, Every single fibre cable telkom run to their DP Units run at 155Mbps.

When that 155Mbps Capacity is reached, We make the decision whether to move lines over to a different DP Unit in the area (Takes quite a while) or we will run either a new fibre cable (Takes quite a while aswell).
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Isn't that just with the old, non metro ethernet DPs? I was under the impression that ADSL2+ enabled DPs have a gigabit link. How can Telkom expect to supply 50 people with 100Mb fibre links if their backhaul to the exchange is 155Mb? (Even if they aren't all using it at the same time, this is still very low). Perhaps I'm confused. I'm also assuming by DP you mean MSAN, DSLAM, IMAX etc.
 
jackshiels said:
Isn't that just with the old, non metro ethernet DPs? I was under the impression that ADSL2+ enabled DPs have a gigabit link. How can Telkom expect to supply 50 people with 100Mb fibre links if their backhaul to the exchange is 155Mb? (Even if they aren't all using it at the same time, this is still very low). Perhaps I'm confused. I'm also assuming by DP you mean MSAN, DSLAM, IMAX etc.
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All MSAN/ISAM units are linked back to the exchange via a 1GBps optic fibre link. Initially only 160Mbps is lit but it has some form of dynamic management system that increases this capacity as demand increases (no hands in network required).

Most exchanges linked into the core network with a 10Gbps metro-ethernet link. Telkom is busy moving all exchanges onto metro ethernet links. Those exchanges that are FTTH, MSAN, ISAM or ADSL2+ enabled are already on metro ethernet.
 
MickeyD said:
Yes.
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/Correction

All of the exchanges and certain DP's**

The new DP's have metro ethernet.

However the old DP's run copper through to the exchange and the exchange will move onto the metro ethernet.

The new DP's run fibre to them and then copper as the last mile access, Whereas old run copper from exchange to DP and copper to client which is bad as the loop is longer which causes issues like attenuation, Signal loss etc.
 
Lynx_ZA said:
/Correction

All of the exchanges and certain DP's**

The new DP's have metro ethernet.

However the old DP's run copper through to the exchange and the exchange will move onto the metro ethernet.

The new DP's run fibre to them and then copper as the last mile access, Whereas old run copper from exchange to DP and copper to client which is bad as the loop is longer which causes issues like attenuation, Signal loss etc.
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What is a DP ?
What I actually want to know if my exchange will be upgraded from 4Mbps in Kirkwood before the starlight year 2525.

Sorry for going off topic, Lara.
 
RoMark said:
What is a DP ?
What I actually want to know if my exchange will be upgraded from 4Mbps in Kirkwood before the starlight year 2525.

Sorry for going off topic, Lara.
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Please continue, it helps me understand the terminology that is used.
 
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