DSLAM Basics

Hi Lady,

Most CRMs seem to be based either on Siebel or are developed in-house. To make matters more complicated nearly all provisoing systems used bty telcos are in house developed as well

Cause problems as most in-houses systems try to be a king of all trades rather then proficent at some.

For example we have one operator where their provisioning system issues commands at a faster rate then the DSLAM resulting in multiple config errors

R

Unfortunately Ive not had the opportunity to see how they really use the CRMs but your posts gives me some kind of an idea. Thanks.

thanxs mr ranger

Hellow Mr.Ranger,
from your explanation i understood that DSLAM can be considered as many MODEM's, if that right can i connect two modems directly

At the first page of this topic you say:

2) ETHERNET DSLAM
- Customer modem packages ethernet frames in to Atm Cells
- ATM cells are transmitted over the phone line using DSL
- DSLAM line card receives ATM cells and passes them to Control card
- Control card re-assembles ethernet frame from ATM cells
- Ethernet frames forwarded to VLAN based trunk interface based on connection table and on to BRAS

This means that in any case (ATM or Ethernet DSLAM) the packets that start from customer's site are always packed as ATM cells up to DSLAM. So CPE Router<---> DSLAM we alwyas have ATM over DSL?

Hi Stelras,

Correct. The DSL link is always ATM Cells over a DSL line.

There are a few vendors looking to change this to Ethernet of DSL but I don't believe there is a standard for this.

br

R