User`s guide

117
Invert RX clock
When checked, this checkbox will cause the router to invert the voltage level of the receive
clock signal.
Invert TX clock
When checked, this checkbox will cause the router to invert the voltage level of the transmit
clock signal.
Encoding NRZ / NRZI
These two radio buttons select between non-return to zero (NRZ) and non-return to zero
(inverted) (NRZI) signal encodings.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
sy 0 descr
Text description of
interface
Description
sy 0 clksrc int,ext Clock source
sy 0 rxclkinv OFF,ON Invert RX clock
sy 0 txclkinv OFF,ON Invert TX clock
sy 0 encode nrz,nrzi Encoding
Rate Adaption
Configuration – Network > Interfaces > Serial> Rate Adaptation
The router supports two rate adaptation protocol (Adapt) instances. Each instance enables
the selection and configuration of the protocol to be used for rate adaptation over an ISDN
B channel. The supported protocols are; V.110, V.120 and X.75. Depending on which
protocol is selected, there may be an associated LAPB instance (distinct from the two
general purpose LAPB instances), as for example, when V.120 is used in error-corrected
(multi-frame) mode. Clicking the triangle at the left of the blue bar opens up the two
instances described below.
Rate Adaption n
Configuration – Network > Interfaces > Serial> Rate Adaptation> Rate Adaptation
n
This page displays the configuration parameters directly relevant to the rate adaptation
protocol only, LAPB configuration pages are to be found here: Configuration – Network >
Legacy Protocols > X.25 > LAPB. When configuring LAPB parameters, be aware that
LAPB 2 is used for adapt 0 and LAPB 3 is used for adapt 1.
Attempt to redial the connection n times if rate adaption has not been negotiated
If an ISDN connection is established, but rate adaption is not negotiated, the value in this
text box specifies how many times the router should drop the connection and redial it.
Drop the connection if it is idle for h hrs m mins s secs
The values in these text entry boxes specify the time to wait before dropping the connection
if the connection becomes idle.
Leased line mode
When checked, this checkbox will allow the router to attempt to maintain the connection
automatically once it has been established.