ELTEX SMG-4 - Tracing

SMG digital gateway 107
format; if the call is unsuccessful, the time of the message is
specified upon reception of which SMG begins the call
termination procedure (CANCEL, other)
$USER_NAME
Determined from incoming trunk settings:
 <$CgPN_IN>;
 source IP address or E1 stream number [by default];
 incoming trunk name.
4.1.14 Tracing
4.1.14.1 PCAP Tracings
This menu allows configuration of network traffic analysis and the TDM protocol.
TCPdump—settings of the TCP–dump utility:
TCP-dump—a utility to intercept and analyse network traffic.
 Interface—an interface for network traffic interception.
 Capture length limit—size limit for intercepted packets, bytes.
 Add filter—packet filter for the tcpdump utility.
Structure of Filter Expressions
Every expression defining a filter includes a single or multiple primitives, which contain a single or multiple
object identifiers and preceding qualifiers. An object identifier may be represented by its name or number.
Object Qualifiers
1. type—indicates the object type specified by the identifier. An object type may have the
following values:
host,
net,
port.