Figure 2-16. An Example Of Hdlc Tunneling; Figure 2-17. An Example Of Hdlc Tunneling Cable Interconnections - Siemens A53457 Installation & Maintenance

INSTALLATION AND CONFIGURATION
The Persistent Serial Tunnel TCP connection is allowed because the HDLC device is allowed to
tunnel, but the TCP connections are not allowed to the serial interface if there is no persistent
tunnel. This prevents an operator from interfering with any HDLC communications that are taking
place on the serial interface.

Figure 2-17. An Example of HDLC Tunneling Cable Interconnections

Document No.: COM-00-05-16
Version: C.1

Figure 2-16. An Example of HDLC Tunneling

RJ45
1
4
Packet
Switch
2
5
Cable 1
DB25
2
3
14
16
24
17
18
9
7
BCM
Cable 2
DB25
2
3
24
17
WAG
DB25
2
3
14
16
24
17
18
9
7
WAG
2-16
June 2006, Revised June 2014