Verilink PRISM 41TDM (34-00275.4) Product Manual - Manual (Page 27)

DTE Port Parameters 19
opposite port (Port B) at the far end. This data swapping is a side effect of the rate
swapping feature and only occurs at DTE rates of 31.2 kbps (TXP-I) and 38.4 kbps
(TXP-II) when the units are improperly configured. Table 3-2 shows the DTE
Configuration menu structure.
Mode The 41TDM DTE interface can operate in two modes: TDM (time division
multiplexer) and NON-TDM (standard). In the NON-TDM mode, DTE interface B
is disabled allowing DTE interface A to run at higher speeds. In the TDM mode,
both DTE interfaces are active and are multiplexed together into the single DDS
network path. The DDS mode must be set to TXP-I or TXP-II to enable the TDM
mode.
Port A/Port B These options allow access to configuration sub-menus specific to the DTE
interfaces.
Format
When operating in the DDS-I or DDS-II modes, the DTE interface is always
synchronous. When set to the TXP-I or TXP-II modes, the 41TDM DTE interface
can operate as synchronous or asynchronous. When a unit is configured for
asynchronous DTE data, it operates in the TxPORT proprietary mode and requires
another 41TDM (or 3030/3060 with DSU-MP card) on the remote end. The
supported asynchronous DTE rates are listed in Table 3-3. The following
parameters must be set for asynchronous operation: eight bits per character, one or
two stop bits, and no parity.
Table 3-2 DTE Configuration Menu
Mode Port A/Port B
TDM
NON-TDM
Format Rate
(kbps)
Interface DSR DCD RTS RTS/CTS
Delay DTR
Alarm V.54
Loop LL
Detect RL
Detect
Sync
Async
2.4
4.8
9.6
19.2
31.2
8.4
52
56
57.6
60
64
RS-232
V.35
EIA-530
Force On
Test>Off
Force On
Idle>Off
Force On
Normal
Normal
Long
Enable
Disable
Enable
Disable
Enable
Disable
Enable
Disable