igor2930 Series User’s Guide 
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ALERTING - 
Indicates that a call is coming. 
ACTIVE-
Indicates that the VoIP connection is launched. 
Codec 
Indicates the voice codec employed by present channel. 
PeerID 
The present in-call or out-call peer ID (the format may be IP 
or Domain). 
Elapse
The format is represented as hours:minutes:seconds. 
Tx Pkts
Total number of transmitted voice packets during this 
connection session. 
Rx Pkts
Total number of received voice packets during this connection 
session. 
Rx Losts
Total number of lost packets during this connection session. 
Rx Jitter
The jitter of received voice packets. 
In Calls
The accumulating in-call times. 
Out Calls
The accumulating out-call times. 
Speaker Gain
The volume of present call. 
Log
Display logs of VoIP calls. 
3.12 ISDN 
3.12.1 Basic Concept 
ISDN means integrated services digital network that is an international communications 
standard for sending voice, video, and data over digital telephone lines or normal telephone 
wires. 
Below shows the menu items for ISDN.