CTC Union IPM-4SE, User Manual

Chapter 3  Configuration and Operation 

15 

3.7 Fault Report 

The alarms/status of NE node can be reported thru RS232 or Telnet (CLI command). The resource of alarms 
is only from TDM interface (E1) and the acronym alarm names are shown as follows.  
 

E1LOS

: (E1 Loss of Signal) No E1 line connected to the specific E1 port. 

E1AIS

: (E1 Alarm Indication Signal) AIS (all 1’s) signal input from the specific E1 port. 

PWLBIT

: (Pseudo Wire L bit) Remote E1 port failure condition (LOS or AIS). 

PWRBIT

: (Pseudo Wire R bit) Packet loss occurred at remote E1 port. 

PWSEQNUMERR

: (Pseudo Wire Sequence Number Error) Packet loss occurred for specific E1 local 

port. 

JBUFEMP

: (Jitter Buffer Empty) Buffer empty occurred at specific E1 port. (typically from link 

down or mis-configuration.) If link is good, increase the jitter buffer at the expense of latency. 

JBUFOV

: (Jitter Buffer Overflow) Buffer overflow occurred at specific E1 port. There is probably a 

problem with bi-direction throughput of the Ethernet WAN link. 

3.8 Save Configuration 

After changing the configurations from CLI or Telnet, the "SAVE" action should be done to store the 
configuration into non-volatile storage. This can avoid loosing settings if the device is rebooted or powered 
off/on. 

3.9 Command Line Interface Setup 

3.9.1 Using HyperTerminal™ as Local Console Terminal 

When logging into the HyperTerm, set up the terminal port as follows:  

•

Bit rate: 115200bps 

•

Data bit: 8 

•

Parity: none 

•

Stop bit: 1 

•

Flow control: none 

•

Login password: 

admin

 (factory default) 

3.9.2 Telnet in for Remote Console Terminal 

If using the "Telnet" command in an Operation System, such as Windows or Linux, the default port of the 
IPM-4SE is 8888 instead of the standard port 23 for security issue. The default IP address of the management 
port is 192.168.1.1 and net mask is 255.255.255.0. The IP address, therefore, of the Telnet Client needs to be 
set in the IP range 192.168.1.2 to 192.168.1.254 and the same net mask. An example of a command line in 
Windows would be the following: 

C:\WINDOWS\system32> telnet 192.168.1.1 8888 

 
The factory default login password in both serial console CLI and Telnet modes is "admin".  The CLI user 
commands are listed in the following table for detail and implemented on CLI and TELNET modes: 
 

3.9.3 Setting CLI (Telnet) login password 

Important: DO NOT FORGET the password once changed or you must return the unit to factory. There is no 
back-door password or any recovery procedure. 
 

CLI> setpass c 

===== Set Password for CLI Login ===== 

Enter Old Password: admin ==> OK! 

Enter New Password: *** ==> OK! 

Re-Enter New Password: *** ==> OK! 

CLI>