User guide

3-1
Telesyn Service Guide (Optimizing Video Services)
3. Optimizing Video Services
3.1 Overview
Video service can be configured using either:
• ADSL - This uses the ADSL technology/protocol at the lower protocol layer level that is transported over
Ethernet. A typical configuration involves using an ADSL modem at the premesis and an ADSL card at the
Telesyn.
• Ethernet - This uses ethernet directly. A typical configuration involves using an Residential Gateway (RG)
at the premesis and an Ehternet card (FE or FX) at the Telesyn.
Note: These are example configurations: refer to Section 7 for examples that emply mulitple
services.
3.2 Video Services provided by ADSL
3.2.1 Overview
Figure 3-1 shows the basic Telesyn ADSL product configuration. It shows the customer interface in more detail
and shows how video services are configured. System components include the ADSL8S, ADSL16, ADSL16B,
and ADSL24 cards.
Since some subscribers may have more than one Set Top Box (STB) at their residence, the ADSL
interface can
support more than one STB, each needing to support a separate channel. Moreover, one STB may need to support
two video channels at once (such as picture within a picture).
Note: Figure 3-1 shows two STBs attached to the ADSL interface. The general configuration rule is
that each ADSL interface can support up to three STBs, and the ADSL16 card can support up
to 24 STBs. Details on these rules are provided later in this section.