61182118L1-5B
Issue 2, July 2004
9
Cross-Connect Map
The purpose of the cross-connect map (
Table 4
on
page 5) is to allocate the time slots (TS0s) from the
SHDSL loop to user ports (E1) and configure framing.
The cross-connect maps can be accessed via the VT100
terminal screens.
1. select “2,” Provisioning, from the Main Menu
2. select “1,” Unit Options,
3. select “2,” Cross Connect Map.
The cross-connect map is split down the middle in two
sections. The left section of the map lists the SHDSL
time slots and right section of the map lists the G.703
time slots. The user builds a new pending map before
making it active with the apply key. The options listed
at the bottom of the screen allow the user to setup and
manipulate the time slots. The statement at the bottom
of the screen indicates the framing status. Time slot
configuration options are described in
Table 4
.
Cross-connect commands are described in
Table 5
.
Typical Applications
Framed Full E1 Service is set up using the quick key
“G,” and then selecting “A” to save the changes.
Unframed Full E1 Service is set up using the quick key
“G,” entering “1” in both the SHDSL TS0 slot and the
G.703 TS0 slot, and then selecting “A” to save the
changes.
Table 4. Cross-Connect Map Timeslot Assignments
Option
Description
0. Idle
If a time slot is set for idle, an idle code is inserted. The pattern will always be FF hex (all
1s) toward the SHDSL network. The idle pattern out the G.703 interface is programmable
under the G.703 option. The default is FF hex (all 1s).
1. G.703 Service
The selected time slot will carry G.703 service (Refer to the
Full G.703 Services
subsection for more information).
32. G.704 Framing
This option enables three different framing configurations. Framing is always set in the
first time slot (TS0). The framing will be locally generated if 32 is entered in the G.703
TS0 slot only. If 32 is entered in the G.703 TS0 and the SHDSL TS0, then the framing
will be passed transparently between the G.703 and SHDSL ports. If values other than 32
are assigned to both the SHDSL TS0 slot and G.703 TS0 slot then the operation is G.703
unframed (if other G.703 service values are assigned to the G.703 time slots).
Table 5. Cross-Connect Map Commands
Command
Description
A. Apply New Map
This command saves and activates any changes made by the user.
C. Cancel Changes
This command will undo any changes made by the user since the last saved
configuration. The new pending map will revert to the currently active time slot
assignments.
G. Full G.703
Service
If this quick key command is selected, the cross-connect map will automatically
configure the time slots for Full G.703 service, and the framing will be set for
transparent. Refer to the Typical Applications subsection for more information.
Tab. Select SHDSL
or G.703 Time Slots
The tab key moves the cursor between the SHDSL and G.703 sections of the cross-
connect map.
Arrow Keys Move
Cursor
The arrow keys allow movement between the individual time slots.
