E • Frame Relay to ATM Internetworking
Model 3086 G.SHDSL Integrated Access Device User Guide
154
FRS Process—Definition and Configuration
> options: internal - internal timing
> external - external timing
> notes: For X.21 devices this setting must match
> the DTE/DCE jumper inside the unit
>serial speed:
> Defines the clock speed for the serial interface
> options: n x 64K speed (n=1..32), example: "1536" or "256"
>
> serial txClkInv:
> Allows the user to invert the clock source
> options: normal - use normal clock
> inverted - use the inverted version of the clock
> serial rxClkInv:
> Allows the user to invert the clock source
> options: normal - use normal clock
> inverted - use the inverted version of the clock
> serial txSamplePoint:
> Determines whether the TxData will use the External
> Clock or the Transmit clock to sample data
> options: txClk - use Transmit Clock
> extClk - use External Clock
>
FRS Process—Definition and Configuration
FRS is a means by which a system can transport data from a frame relay DLCI to an ATM VPI/VCI connec-
tion. In an FRS connection the data is not terminated in the unit, it is transformed in the connection on the
other side of the link. When an FRS conversion takes place the system will pull information from the framere-
lay header field and create an ATM cell with similar information. This will also be performed in the opposite
direction. The following information pertains to the FRS configuration.
The 3086 allows for eight individual FRS connections. Each is configured individually through either the CLI
or web interface. The connection should be configured and then enabled. Once the connection is enabled, a
connection will be created linking the framerelay DLCI to the ATM VPI/VCI as defined by the configuration.
Variables Available
transMode
Defines how data will be transferred between the framerelay connection and the ATM connection.
Options:
•
Translate—translate the encapsulation type between frame relay and ATM.
•
Transparent—transparently pass the raw data across the link. Useful if the protocol being used is not one of
the supported translation protocols, such as VOIP.
Function:
•
The transMode setting defined how the framerelay and ATM data is transferred between the systems.
–
When a translate session is opened the FRS system will create the following connections between the
framerelay link and the ATM link:
Raw
RoutedIP
ARP
