3 Installation
3-12 NetPath 100 User’s Manual - Installation Guide 980-001-0210G
June
1999
ITU-X.21-NS
Adapter Cable
Use CRC cable assembly # 135-005-0400, or per pinout shown in Table 3-7.
ITU-X.21-NS (NS indicates Non-Switched)
AUX 1 & AUX 2
Connections
AUX Ports can be used to access other equipment through the NetPath dial line. For
example, the console port of the DTE device (Router, FRAD, etc.) connected to the
NetPath can be connected to an AUX Port.
Use CRC cable assembly # 135-008-0400 for modular to DB25, or # 135-990-0006 for
modular to Cisco* router console, or per pinouts shown in the tables on the next page.
* Cisco is a registered trademark of Cisco Systems, Inc.
CAUTION
Use caution when connectin
to an AUX Port. AUX Port connectors are
similar to the connector for the T1 Line. Accidental connection to either
of the AUX Ports with the T1 Line, may dama
e the AUX Port electrical
interface.
Table 3-7 ITU-X.21-NS Interface Adapter Cable (CBC=4)
DB-15F
Pin
DB-44M
Pin
Si
nal Direction
DB-15F
Pin
DB-44M
Pin
Si
nal Direction
116Shield N/A 9 32 TD-B Input
2 17 TD-A Input 10 34 Control-B Input
3 19 Control-A Input
11 33 RD-B Output
4 18 RD-A Output
12 38 Indication-B Output
5 23 Indication-A Output 13 40 TC-B Output
6 25 TC-A Output
14
7
15
8 22 Sig. Gnd. N/A
26 to 22 CBC-A* N/A
28 to 22 CBC-B* N/A
30 CBC-C* N/A
Notes: *CBC = Cable Code pin.
(s) = single ended.
Twisted Pair cable conductors for: TD-A & B, RD-A & B, Control-A & B, Indication-A & B, and RC-A & B.
DTR signal and DTE timing are not supported in ITU-X.21-NS mode.
Shielded cable is recommended.