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Table 3:
Synchronous Data Port Options – Model 7995 (1 of 2)
Port Type
Possible Settings: E530A, V.35, RS449, X.21
Default Setting: E530A
Determines the port type for the data port.
Payload Rate
Possible Settings: 64 – 2304 kbps in 64k increments
Default Setting: 192 kbps
Specifies the payload rate of the port. This option is not displayed on the unit when Adaptive
Rate is enabled. The STU-C configures the payload rate for the STU-R when Adaptive Rate is
disabled (Max DSL Rate = Min DSL Rate, see
Transmit Clock Source
Possible Settings: Internal, External
Default Setting: Internal
Specifies whether the transmitted data for the synchronous data port is clocked using an
internal clock provided by the DCE or an external clock provided by the DTE connected to the
synchronous data port.
Invert Transmit Clock
Possible Settings: Disable, Enable
Default Setting: Disable
When configured as the STU-C and Transmit Clock Source is set to External, specifies
whether the clock supplied by the the unit on the TXC interchange circuit DB (ITU-T 114) is
phase inverted with respect to the Transmitted Data interchange circuit BA (ITU-T 103). This
configuration option is useful when an excessive cable length between the unit and the DTE
causes errors.
Send All Ones on Data Port Not Ready
Possible Settings: Both, Disable, DTR, RTS
Default Setting: Both
Specifies the conditions on the data port that determine when valid data is not being sent from
the DTE. When this condition is detected, all ones are sent to the network.
Action on Network LOS Alarm
Possible Settings: Halt, None
Default Setting: Halt
Specifies the action taken on the synchronous data port when an LOS (Loss Of Signal) alarm
is received on the DSL interface.
7990-A2-ZN10-30
Table 1, DSL Interface
Hotwire TDM SHDSL Endpoints
Options).
15
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