Lucent Technologies SLC ConnectReach User & Service Manual page 47

Product Description
Physical and Functional Description
Interfaces (Continued)
Emulated channel
units (continued)
SPQ443 Channel Unit (E SPOTS/Current Feed)
The SPQ443 channel unit is a quad E SPOTS channel unit that is used to handle
DS0 signals routed to a digital PBX or digital key system attached to the
secondary T1/DSX-1 line. The SPQ443 channel unit is used exclusively in this
capacity since it communicates with the SLC-2000 RT/HDT using D-bank
signaling and the PBX/key system also expects D-bank signaling.
NOTE:
Since the SLC ConnectReach system is only cross-connecting DS0 signals
between the primary T1/DSX-1 line and the secondary T1/DSX-1 lines
when emulating the SPQ443 channel unit, none of the normal provisioning
parameters for the SPQ443 channel unit, such as transmit gain, receive
gain, hybrid balance, or equalization slope, will apply to the SLC
ConnectReach system.
SPQ452 Channel Unit (OCU Dataport)
The SPQ452 channel unit is a dual dataport channel unit that is used to provide
data capability. The SPQ452 channel unit normally uses two DS0 signals for data
and can use the other two DS0 signals for error correction. When used in the SLC
ConnectReach system, all four DS0 signals can be used to carry data.
Bandwidths greater than 64 kb/s can be constructed by mapping as many as 24
contiguous data DS0 signals. Since the SPQ452 channel unit is emulated by the
router function embedded in the mother board of the SLC ConnectReach system,
the use of a separate circuit card is unnecessary.
When configuring the SLC ConnectReach system, blocks of data DS0 signals can
be assigned to go to either the router (most likely then onto the 10Base-T Ethernet
port) or to the secondary T1/DSX-1 port. For data going to the router, options such
as setting the data rate or SW56 have no meaning and will be ignored. For data
going to the secondary T1/DSX-1 port, these commands may have meaning to
hardware connected to the secondary T1/DSX-1 line, but the SLC ConnectReach
system will not act on them.
363-208-050
(Continued on next page)
Issue 4 June 2002 2-5