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[ S N O M 4 S N A T F I L T E R ]
space etc.), the setup is a little bit more difficult that the setup of a stan- dard sensor.
A readable parameter is described by its object identifier (OID). The object identifies are described in the next paragraph. Please enter the OID in your tool and select appropriate names for them. Also make sure that the IP address of the host running the SNMP tool matches the setup that you gave the SBC in the “Trusted IP Addresses” setting.
The SBC does not support “snmpwalk” or other tools that auto- matically describe the abilities of the SBC. You must enter these settings manually.
6.3. Available OID
The following table describes the available OID. An absolute value describes the current state on the SBC, the value might go up and down. Relative values only go up and accumulate the values.
OID | Description | Absolute | Unit |
1.3.6.1.2.1.7526.1.1 | Open Calls | Yes | Calls |
1.3.6.1.2.1.7526.1.2 | Registrations | Yes | Registrations |
1.3.6.1.2.1.7526.1.3 | Minutes | No | Minutes |
1.3.6.1.2.1.7526.1.4 | Received Media | No | Bytes |
1.3.6.1.2.1.7526.1.5 | SIP Packets | No | Packets |
1.3.6.1.2.1.7526.1.6 | SIP Traffic | No | Bytes |
1.3.6.1.2.1.7526.1.7 | Successful Calls | No | Calls |
1.3.6.1.2.1.7526.1.8 | Unsuccessful Calls | No | Calls |
The minutes are measured only for the codecs ulaw, alaw, G.726 (32 kbit/s), GSM 6.10, G.723.1 and G.729. The minute measurement is done by looking at the media type in the RTP packet. If the packet uses a
The SBC measures only the received traffic. Usually, this is equal to the sent traffic, because the SBC does not block traffic. However, when there is a problem with the media establishment, the number of transmit- ted bytes might differ from the number of received bytes. The information does not include IP header like the UDP header.
62 • SNMP