Prm enable, Zero suppression, T1-net timing – Verilink PRISM 3030 (34-00208.L) Product Manual User Manual
Page 71: Station timing, Remote comm channel, Prm enable zero suppression t1-net timing, Station timing remote comm channel
Configuration Screens
61
PRM Enable
Allows the T1.403 Performance Report Message, which is sent once a second, to
be turned on or off. The choices are ENABLE and DISABLE.
Zero Suppression
Determines whether ones density insertion is activated after 15 zeros (rather than
175 zeros). The choices are ENABLE and DISABLE.
T1 -NET Timing
Sets the timing source to synchronize the unit’s internal timing generators. In all
cases, slips are controlled to occur on frame boundaries at the network and/or
DSX1 ports when timing synchronization is lost.
NETWORK.
Timing is derived from the network recovered clock (most applications
use this selection).
STATION.
Timing is derived from a bipolar- or TTL-compatible clock supplied to
the unit at the rear panel STA CLK connector. When this mode is selected, the
timing rate must also be set from Station Timing.
INTERNAL.
The unit’s internal frequency standard is used for all timing.
T1 DTE.
The unit synchronizes to the clock recovered from the DSX1 T1 DTE
port. This selection only appears on units equipped with the T1 DTE option.
SLOT X, PORT Y.
Timing is synchronized to the external terminal timing clock
supplied from the DTE and connected to the selected port.
Station Timing
Selects the input timing and only appears when Station is selected from the
T1 -NET Timing menu. The choices are N
×
56 K, N
×
64 K, and 1.544 MHz. A
number appears to the right of this field when N
×
56K or N
×
64 K is selected to
indicate the rate multiplier. A value from 1 through 24 must be entered.
Remote Comm Channel
Selects a communication link to the far-end unit. If 0 is selected, communication is
established over the ESF facility data link (valid only when the network interface is
configured for ESF and the FDL has end -to-end integrity). For example, the entire
T1 bandwidth must be available with no intervening multiplexers in the signal path
blocking the FDL.
As an alternative, the communication link can be assigned to an unused idle
channel. This option can be used whether the network is operating in a D4 or ESF
mode.
When the remote communication is programmed to operate over a spare network
channel, the following test conditions interrupt access to the far-end unit.
✦
A remote network LLB or PLB is initiated.
✦
A local network LLB is initiated.