Sippy Software, Inc.

$ sudo /usr/local/etc/rc.d/snmpd restart
$ sudo /home/ssp/scripts/rc.firewall.sh

$ sudo cp /usr/home/ssp/etc/SIPPY-MIB.txt /usr/local/share/snmp/mibs/SIPPY-MIB.txt

snmpget -v2c -m SIPPY-MIB -c <YOUR_SNMP_COMMUNITY_STRING> <YOUR_SSP_HOST> SippyEnvIdEntry.1
# example of the output:
SIPPY-MIB::SippyEnvIdEntry.1 = STRING: "1/Primary/"

snmpget -v2c -m SIPPY-MIB -c <YOUR_SNMP_COMMUNITY_STRING> <YOUR_SSP_HOST>SippyEnvActiveCallsEntry.13
# example of the output:
SIPPY-MIB::SippyEnvActiveCallsEntry.13 = INTEGER: 11

snmpget -On -v2c -m SIPPY-MIB -c <YOUR_SNMP_COMMUNITY_STRING> <YOUR_SSP_HOST> .1.3.6.1.4.1.36523.1.1.1.1.1.1
.1.3.6.1.4.1.36523.1.1.1.1.1.1 = STRING: "1/Primary/"

snmpget -On -v2c -m SIPPY-MIB -c <YOUR_SNMP_COMMUNITY_STRING> <YOUR_SSP_HOST> .1.3.6.1.4.1.36523.1.1.1.2.1.13
.1.3.6.1.4.1.36523.1.1.1.2.1.13 = INTEGER: 15

In order to translate numeric OID to human-readable name snmptranslate utility could be used:

$ snmptranslate -m SIPPY-MIB .1.3.6.1.4.1.36523.1.1.4.3.1
SIPPY-MIB::SippyConnectionConnectedCallsEntry

The following diagram shows the latest version of SIPPY SNMP monitoring

Picture 1) Sippy SNMP

* will be available in the next release.

All of the attributes can be fetched with the snmpget command.

    A subtle note is the SippyEnvNAuthorizedCallsEntry, SippyEnvNRoutedCallsEntry, SippyEnvNConnectedCallsEntry, SippyEnvTotalCallsDurationEntry, SippyEnvNReceivedCallsEntry, and SippyEnvNOriginatedCallsEntry, SippyRtpProxyNoRtp, SippyRtpProxyDiscard, SippyRtpProxyOneWay are accumulative. For instance, getting the X number for SippyEnvNConnectedCalls data means there are X Connected Calls until now, refer to BaseTime from now on. If the returned value is Y in 60 minutes later, it means there are (Y - X) new number of successful calls in the past 60 minutes.

Example;

The number of Connected Calls at BaseTime: X

The number of Connected Calls at (BaseTime + one hour): Y

So, the number of Connected Calls in the past one hour = Y - X

Calculate ACD / ASR by SNMP:

ACD - Average Call Duration

The formula for ACD is:

Total duration of answered calls (in seconds) / Total number of answered calls

In case of interest of the ACD for the past one hour, the values should be fetched two times with one hour interval:

At 10:00 AM:

$ snmpget -v2c -m ~ssp/etc/SIPPY-MIB.txt -c public 127.0.0.1 SippyEnvTotalCallsDurationEntry.1 SippyEnvNConnectedCallsEntry.1

SIPPY-MIB::SippyEnvTotalCallsDurationEntry.1 = Counter64: 19

SIPPY-MIB::SippyEnvNConnectedCallsEntry.1 = Counter64: 2

At 11:00 AM:

$ snmpget -v2c -m ~ssp/etc/SIPPY-MIB.txt -c public 127.0.0.1 SippyEnvTotalCallsDurationEntry.1 SippyEnvNConnectedCallsEntry.1

SIPPY-MIB::SippyEnvTotalCallsDurationEntry.1 = Counter64: 246

SIPPY-MIB::SippyEnvNConnectedCallsEntry.1 = Counter64: 7

In this particular example between 

CallsDuration = 246 - 19 = 227

ConnectedCalls = 7 - 2 = 5

ACD = (CallsDuration / ConnectedCalls) = 227 / 5 = 45.4

ASR - Average Seizure Ratio

This is the formula: (Successful Calls / Calls Attempts) * 100

At 10:00 AM:

$ snmpget -v2c -m ~ssp/etc/SIPPY-MIB.txt -c public 127.0.0.1 SippyEnvNReceivedCallsEntry.1 SippyEnvNConnectedCallsEntry.1

SIPPY-MIB::SippyEnvNReceivedCallsEntry.1 = Counter64: 6

SIPPY-MIB::SippyEnvNConnectedCallsEntry.1 = Counter64: 2

At 11:00 AM:

$ snmpget -v2c -m ~ssp/etc/SIPPY-MIB.txt -c public 127.0.0.1 SippyEnvNReceivedCallsEntry.1 SippyEnvNConnectedCallsEntry.1

SIPPY-MIB::SippyEnvNReceivedCallsEntry.1 = Counter64: 34

SIPPY-MIB::SippyEnvNConnectedCallsEntry.1 = Counter64: 19

Here, the Calls Attempts is 34 - 6 = 28, and the Successful Calls is 19 - 2 = 17

Therefore,

    ASR = (17 / 28) * 100 = % 60.71

The other types of ASR ratio such as routed ASR, Authorized ASR, and Originated ASR can be calculated with the same approach by the SippyEnvNRoutedCallsEntry, SippyEnvNAuthorizedCallsEntry, and SippyEnvNOriginatedCallsEntry data.