User guide

Video Services provided by ADSL Software Engineering
Telesyn Service Guide (Optimizing Video Services)
3-10
3.2.4.3 Engineering of STBs for the ADSL24
Calculations for the maximum number of STBs per port are the same for the ADSL24 SM as those discussed
above for the ADSL16 and ADSL8S. Refer to Figure 3.2.4.2 for more information. 3 STBs per ADSL24 port is
the norm.
3.2.4.4 ADSL IGMP Video Configuration
For each ADSL interface, the following can be configured for the specified Telesyn:
• Three STB with Five streams per STB
• One channel change per STB per second
3.2.5 Software Engineering
3.2.5.1 Provisioning for ADSL Ports
Once an interface is provisioned and enabled, the ADSL Loop Quality Audit is activated to ensure the ADSL
loop can support what is provisioned (refer to 3.2.5.2).
Table 3-3 lists the most important port attributes for video service.
TABLE 3-3 Port Attributes for Video Service
Attribute Provisioning Guideline Reference
Customer ID To identify a customer loop, a description can be assigned to the
ADSL port
See the Telesyn User Guide,
section Provisioning Network,
Service, and Control Mod-
ules, subsection SM Category
Attributes.
Minimum
Downstream-
Rate
The Minimum Downstream Rate is the minimum bandwidth
downstream necessary to support the services (video service to one
or two STBs).
See Table 3-4
Maximum
DownStream-
Rate
The Maximum Downstream Rate should be set lower than the
actual maximum the ADSL loop can support, in order to use the
excess bandwidth to correct for noise on the loop.
See Table 3-4
Set Top Box
MAC
Addresses
Each IGMP device must have a unique MAC address associated
with it. Provisioning the STB MAC address is required to prevent
theft of service.
3.2.4.2.1