Avaya Configuring Dial Services Manuel d'utilisateur Page 57

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Implementation Notes
3-7
Example 1
Between two end nodes, there are seven switches, one of which uses a 56 Kb/s
trunk line (Figure 3-2). To accommodate this switch, the router sends data at
56 Kb/s over the 64 Kb/s line that connects the switch to the network. To do this,
the router drops one of the 8 bits of data and sends only 7 bits of useful data at a
time.
Figure 3-2. Rate Adaption for a Network with a 56 Kb/s Trunk Line
Example 2
For a connection between an ISDN and Switched 56 Kb/s network (Figure 3-3),
the router adapts the data rate for the outgoing call to 56 Kb/s to meet that of the
destination device, which can handle data only at 56 Kb/s. To effect this, set the
outgoing phone number’s Adaption Rate parameter to 56 Kb/s.
Figure 3-3. Rate Adaption for a Switched 56 Kb/s Network
64 K
64 K
Router
Router
Switch
Switch
Switch Switch
Switch
Switch
Switch
56K Trunk
ISDN
Connection
56 K
Router
Router
ISDN
Switched
56 K 
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