Paradyne T1 T1 Access Mux 926x - Manual (Page 74)

Setting Up
5-20 9161-A2-GH30-30 April 1998
Table 5-3. Synchronous Data Port Options (4 of 7)
Port (DTE) Initiated Loopbacks
Possible Settings: Disable, DTPLB, DCLB, Both
Default Setting: Disable
Allows the initiation and termination of a local Data Payload Loopback (DTPLB) or a
remote Data Channel Loopback (DCLB) to be controlled by the DTE for the
synchronous data port.
Disable – The DTE attached to the port does not control the Local DTPLB and remote
DCLBs.
DTPLB – The DTE attached to the port may control the DTPLB for the port. The
loopback is controlled by the interchange circuit LL (CCITT 141) – Local Loopback as
specified by V.54. The port remains in DTPLB loopback as long as interchange circuit
remains on.
DCLB – The DTE attached to the port may control the DCLB for the connected remote
port. The loopback is controlled by the interchange circuit RL (CCITT 140) – Remote
Loopback as specified by V.54.
NOTE: The remote equipment must support in-band V.54 loopback.
Both – The DTE attached to the port may control both the local DTPLB and remote
DCLBs.
Embedded Data Link
Possible Settings: Enable, Disable
Default Setting: Disable
Specifies whether the Embedded Data Link (EDL) is enabled for the synchronous data
port. When the EDL is enabled, 8 kbps of the total bandwidth allocated for the port are
not available to the synchronous data port. For example, if the port rate is 256 kbps
(4 DS0 channels allocated) and the EDL is enabled, then only 248 kbps are available to
the port. The EDL provides detection of frame synchronization, CRC of the data stream
(excluding the 8 kbps EDL), and a 4 kbps inband data link between the local and remote
units. The 4 kbps in-band data link can be used for performance report messages
(PRMs) and as a management link for IP traffic.
H EDL does not appear if Management Link is set to FDL.
Enable – EDL is enabled for the port.
NOTE: EDL must be enabled for both the local port and associated remote port.
Disable – EDL is disabled for the port.
EDL Management Link
Possible Settings: Disable, Enable
Default Setting: Disable
Specifies whether the EDL management link is enabled for IP traffic on the synchronous
data port.
H EDL Management Link does not appear if:
– EDL is set to Disable.
– Management Link is set to FDL.
Enable – EDL management link is enabled for IP traffic flow over the 4 kbps in-band
data link provided by the EDL.
Disable – EDL management link is disabled for IP traffic.