Customizing V.35/V.11-Compatible Units
5-3
7914-A2-GB20-00
February 1998
Table 5-1.
V.35/V.11-Compatible Units Configuration Options
1) SDSL Card Type
Possible Settings: CP, CO
Default Setting: CP
Indicates the placement of the unit in the network configuration. To toggle the card type,
enter 1 at the Config prompt.
CP – Unit is on the customer premises side of the SDSL connection. This automatically
sets the unit to use the SDSL local loop for timing.
CO – Unit is on the central office (or central site) side of the SDSL connection. Timing is
configurable to either internal or external (see option 3).
When SDSL Card Type is changed, a system message warns that the board will
automatically be reset. Enter Y to reset the board and change the type.
2) Payload Rate
Possible Settings: 1 to 24 (64 to 1536 kbps), U (1544 kbps Unframed), N (No Change)
Default Setting: 1544 kbps (Unframed)
Specifies the desired payload rate.
1 – 64 kbps (1 x 64)
12 – 768 kbps (12 x 64)
23 – 1472 kbps (23 x 64)
2 – 128 kbps (2 x 64)
13 – 832 kbps (13 x 64)
24 – 1536 kbps (24 x 64)
3 – 192 kbps (3 x 64)
14 – 896 kbps (14 x 64)
U – 1544 kbps
4 – 256 kbps (4 x 64)
15 – 960 kbps (15 x 64)
(Unframed)
5 – 320 kbps (5 x 64)
16 – 1024 kbps (16 x 64)
N – No Change
6 – 384 kbps (6 x 64)
17 – 1088 kbps (17 x 64)
7 – 448 kbps (7 x 64)
18 – 1152 kbps (18 x 64)
8 – 512 kbps (8 x 64)
19 – 1216 kbps (19 x 64)
9 – 576 kbps (9 x 64)
20 – 1280 kbps (20 x 64)
10 – 640 kbps (10 x 64)
21 – 1344 kbps (21 x 64)
11 – 704 kbps (11 x 64)
22 – 1408 kbps (22 x 64)
If you change from a full T1 rate (1544 kbps) to a lower rate, and the far-end unit is
DSX-1-compatible, you must set the starting time slot on the DSX-1-compatible unit.
See Table C-1 in Appendix C.
When Payload Rate is changed, a system message warns that the board will
automatically be reset. Enter Y to reset the board and change the rate.
3) Timing (on CO units only)
Possible Settings: Internal, External
Default Setting: Internal
Determines the timing source. To toggle the timing, enter 3 at the Config prompt. This
option can only be changed on CO units. CP units always use the SDSL local loop for
timing.
Internal – The unit’s internal clock is used as the clock source.
External – The V.35/V.11 interface is used as the clock source.
When Timing is changed, a system message warns that the board will automatically be
reset. Enter Y to reset the board and change the timing.
