Verilink PRISM 41TDM (34-00275.4) Product Manual - Manual (Page 25)

Network Configuration 17
hierarchy. At the main menu, pressing the Exit button logs the unit out of the
session.
Network
Configuration The Network Configuration screen allows setting the DDS mode, timing, and
alarm thresholds. Table 3-1 shows the Network Configuration menu structure.
DDS Mode The unit can operate in one of four DDS modes on two types of DDS lines.
DDS-I
DDS-I is a standard mode compliant with industry DDS-I standards allowing the
unit to be end -to- end compatible and interoperate with other-vendor, DDS-
compliant DSUs.
DDS-II
DDS-II is a standard mode that can interoperate with other standard DDS-II
equipment.
TXP-I
TXP-I is a proprietary mode for DDS-I lines that require a 41TDM, PRISM
3030/3060, DSU-MP or DSU-DP unit at the other end of the line. This mode
allows async-to-sync format conversion, rate adaptation, two-port multiplexing, and
an in-band data link.
TXP-II
TXP-II mode is a proprietary mode for DDS-II lines that require a 41TDM,
PRISM 3030/3060, DSU-MP or DSU-DP unit at the other end of the line. This
mode allows async-to-sync format conversion, rate adaptation, two-port
multiplexing, and an in-band data link.
Rate This screen displays the network interface line rate automatically determined by
the DDS Mode setting. If the DDS Mode is set to DDS-I or TXP-I, the rate is
automatically set at 56K. If the DDS Mode is set to DDS-II or TXP-II, the rate is
automatically set at 64K. When the unit is in TXP-I or TXP-II mode, the DTE rate
can be at a different value than the value for this rate.
Timing This field selects the bit rate clock source. When selected to Network, timing is
derived from the network recovered clock (the normal DDS mode). When selected
Table 3-1 Network Configuration Menu
Mode Rate Timing
Circuit
Assurance AntiStreaming
Timer Alarm
Thresholds
TXP-I
DDS-II
TXP-II
DDS-I
56 K
64 K
Network
Internal
Off
On
---
10 seconds
30 seconds
60 seconds
OOS
OOF
LOS
FDL
ART