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3 Installation
ITU-X.21-NS
Adapter Cable
DB-15F
DB-44M
Pin
Pin
1
16
2
17
3
19
4
18
5
23
Indication-A
6
25
7
8
22
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.
AUX 1 & AUX 2
Connections
3-12
Use CRC cable assembly # 135-005-0400, or per pinout shown in Table 3-7.
ITU-X.21-NS (NS indicates Non-Switched)
Table 3-7 ITU-X.21-NS Interface Adapter Cable (CBC=4)
Signal
Direction
Shield
N/A
TD-A
Input
Control-A
Input
RD-A
Output
Output
TC-A
Output
Sig. Gnd.
N/A
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.
Use caution when connecting 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 damage the AUX Port electrical
interface.
NetPath 100 User's Manual - Installation Guide
DB-15F
DB-44M
Pin
Pin
9
32
10
34
11
33
12
38
Indication-B
13
40
14
15
26 to 22
28 to 22
30
CAUTION
Signal
Direction
TD-B
Input
Control-B
Input
RD-B
Output
Output
TC-B
Output
CBC-A*
N/A
CBC-B*
N/A
CBC-C*
N/A
980-001-0210G
June 1999
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