SONUS-SIP-SIGNALLING-MIB

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Organization: Sonus Networks, Inc.

Last Updated: 2001-07-31

Category: Sonus Networks VoIP Softswitch, VoIP and Telephony

Description: Manages Sonus Networks softswitch SIP signaling configuration, peer routes, and session statistics.

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What Is SONUS-SIP-SIGNALLING-MIB?

SONUS-SIP-SIGNALLING-MIB is a vendor-specific MIB from Sonus Networks covering the SIP call-signaling subsystem on its softswitch platforms. It exposes SIP protocol timer configuration (T1, T2, session keepalive), retry counts (general and INVITE-specific), and a table of SIP signaling ports with their IP address, port number, interface, and role. Its monitoring value is primarily software/protocol-stack status: signaling port bindings reveal whether SIP is listening on the expected interface, and elevated retry counts or overly long timers point to a struggling SIP session-establishment path affecting call setup. It sits alongside SONUS-H323-SIGNALLING-MIB as the SIP counterpart under the shared Sonus MIB tree, both feeding the same call-processing engine. It is deployed on Sonus GSX/PSX-class softswitches interworking with SIP trunks and carriers in VoIP networks. Engineers can download the SONUS-SIP-SIGNALLING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SONUS-SIP-SIGNALLING-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Sonus Networks softswitch (e.g. GSX/PSX series)

Monitoring Examples

An operator would check sonusSipSigPortTable/sonusSipSigPortEntry, reviewing sonusSipSigPortIpAddress, sonusSipSigPortNum, and sonusSipSigPortRole to confirm a SIP signaling port is correctly bound and serving its intended role (e.g. trunk-facing vs. access-facing). sonusSipSigNumOfRetry and sonusSipSigInviteRetry rising would indicate SIP INVITE messages are frequently being retransmitted, a sign of packet loss or an unresponsive peer. sonusSipSigTimerT1 and sonusSipSigTimerSessionKeepalive would be reviewed when tuning how aggressively the switch detects a dead SIP session.

What Can Be Monitored

SIP signaling port bindings and role
SIP retry/retransmission counts
SIP timer values (T1/T2/keepalive)
session establishment behavior

Imported Objects

From SNMPv2-SMI

Counter64
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

RowStatus

From SONUS-COMMON-MIB

sonusEventClass	OBJECT-TYPE
sonusEventDescription	OBJECT-TYPE
sonusEventLevel	OBJECT-TYPE

From SONUS-SMI

sonusSignallingMIBs

OBJECT-IDENTITY

From SONUS-TC

SonusAdminState
SonusName
SonusServiceState

How to Use in IPNetwork Monitor

Example using sonusSipSigPortStatNumTxPdus OID:

Select a Sonus Networks softswitch, e.g. GSX/PSX series (SIP signaling-port/timer/retry status) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type sonusSipSigPortStatNumTxPdus into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The total number of signalling PDUS sent out on this port. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter64-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
sonusSipSignallingMIB	1.3.6.1.4.1.2879.2.6.7			The MIB Module for SIP IP Call Signal Port Management.
sonusSipSignallingMIBObjects	1.3.6.1.4.1.2879.2.6.7.1
sonusSipSigTimerObjects	1.3.6.1.4.1.2879.2.6.7.1.1
I32 sonusSipSigTimerT1	1.3.6.1.4.1.2879.2.6.7.1.1.1	Integer32	read-write	This is the SIP protocol retransmission timer T1 (in milliseconds). This value applies to all future SIP calls.
I32 sonusSipSigTimerT2	1.3.6.1.4.1.2879.2.6.7.1.1.2	Integer32	read-write	This is the SIP protocol retransmission timer T2 (in milliseconds). This value applies to all future SIP calls.
I32 sonusSipSigTimerSessionKeepalive	1.3.6.1.4.1.2879.2.6.7.1.1.3	Integer32	read-write	This is the SIP protocol session keep-alive timer (in seconds). This value applies to all future SIP calls. when it is set to 0 keepalive is turned off
sonusSipSigRetryObjects	1.3.6.1.4.1.2879.2.6.7.1.2
I32 sonusSipSigNumOfRetry	1.3.6.1.4.1.2879.2.6.7.1.2.1	Integer32	read-write	This is the number of retransmission for SIP message. This value applies to all future SIP calls.
I32 sonusSipSigInviteRetry	1.3.6.1.4.1.2879.2.6.7.1.2.2	Integer32	read-write	This is the number of retransmission for INVITE. This value applies to all future SIP calls.
sonusSipSigPortTable	1.3.6.1.4.1.2879.2.6.7.1.3		not-accessible	Table of SIP Signalling Port configurations. Limit of two ports.
sonusSipSigPortEntry	1.3.6.1.4.1.2879.2.6.7.1.3.1		not-accessible	SIP Signalling Port configuration.
I32 sonusSipSigPortIndex	1.3.6.1.4.1.2879.2.6.7.1.3.1.1	Integer32	read-only	Identifies the Signal Listen Port entry.
IP sonusSipSigPortIpAddress	1.3.6.1.4.1.2879.2.6.7.1.3.1.2	IpAddress	read-write	IP Address of the Sip Signalling Port - mandatory parameter
I32 sonusSipSigPortNum	1.3.6.1.4.1.2879.2.6.7.1.3.1.3	Integer32	read-write	UDP port number of SIP Signalling Port (default is 5060).
INT sonusSipSigPortInterface	1.3.6.1.4.1.2879.2.6.7.1.3.1.4	INTEGER	read-write	The interface type of SIP Call Signal Port. 'mgtnif' routes traffic over the gateway Managment ports. 'nif' routes traffic over one of the gateway PNS ports.
INT sonusSipSigPortRole	1.3.6.1.4.1.2879.2.6.7.1.3.1.5	INTEGER	read-write	Role of the Sip Call Siganlling Port.
SON sonusSipSigPortMode	1.3.6.1.4.1.2879.2.6.7.1.3.1.6	SonusServiceState	read-write	Mode of the SIP Signalling Port.
SON sonusSipSigPortState	1.3.6.1.4.1.2879.2.6.7.1.3.1.7	SonusAdminState	read-write	State of the SIP Signalling Port.
ROW sonusSipSigPortRowStatus	1.3.6.1.4.1.2879.2.6.7.1.3.1.8	RowStatus	read-write	This is for SNMP use.
SON sonusSipSigPortAclState	1.3.6.1.4.1.2879.2.6.7.1.3.1.9	SonusAdminState	read-write	ACL checking state of the SIP Signalling port
sonusSipSigPortStatusTable	1.3.6.1.4.1.2879.2.6.7.1.4		not-accessible	Table of SIP Signalling Port status.
sonusSipSigPortStatusEntry	1.3.6.1.4.1.2879.2.6.7.1.4.1		not-accessible	SIP Signalling Port Status.
I32 sonusSipSigPortStatusIndex	1.3.6.1.4.1.2879.2.6.7.1.4.1.1	Integer32	read-only	Identifies the Signal Listen Port entry.
IP sonusSipSigPortStatusIpAddress	1.3.6.1.4.1.2879.2.6.7.1.4.1.2	IpAddress	read-only	IP Address of the Sip Signalling Port
I32 sonusSipSigPortStatusNum	1.3.6.1.4.1.2879.2.6.7.1.4.1.3	Integer32	read-only	UDP port number of SIP Signalling Port.
INT sonusSipSigPortStatusInterface	1.3.6.1.4.1.2879.2.6.7.1.4.1.4	INTEGER	read-only	The interface type of SIP Call Signal Port. 'mgtnif' routes traffic over the gateway Managment ports. 'nif' routes traffic over one of the gateway PNS ports.
INT sonusSipSigPortStatusRole	1.3.6.1.4.1.2879.2.6.7.1.4.1.5	INTEGER	read-only	Role of the Sip Call Siganlling Port.
I32 sonusSipSigPortStatusNif	1.3.6.1.4.1.2879.2.6.7.1.4.1.6	Integer32	read-only	The network interface index of the port.
SON sonusSipSigPortStatusState	1.3.6.1.4.1.2879.2.6.7.1.4.1.7	SonusServiceState	read-only	State of the SIP Signalling Port.
sonusSipSigPortStatTable	1.3.6.1.4.1.2879.2.6.7.1.5		not-accessible	Table of SIP Signalling Port statistics data.
sonusSipSigPortStatEntry	1.3.6.1.4.1.2879.2.6.7.1.5.1		not-accessible	SIP Signalling Port Statistics.
I32 sonusSipSigPortStatIndex	1.3.6.1.4.1.2879.2.6.7.1.5.1.1	Integer32	read-only	Identifies the Signal Listen Port entry.
IP sonusSipSigPortStatIpAddress	1.3.6.1.4.1.2879.2.6.7.1.5.1.2	IpAddress	read-only	IP Address of the Sip Signalling Port
I32 sonusSipSigPortStatPortNum	1.3.6.1.4.1.2879.2.6.7.1.5.1.3	Integer32	read-only	UDP port number of SIP Signalling Port.
INT sonusSipSigPortStatCountReset	1.3.6.1.4.1.2879.2.6.7.1.5.1.4	INTEGER	read-write	set opertion on this object resets all the statistics counts to zero
I32 sonusSipSigPortStatCallRate	1.3.6.1.4.1.2879.2.6.7.1.5.1.5	Integer32	read-only	number of SIP calls per second during the last minute
I32 sonusSipSigPortStatNumOrigCalls	1.3.6.1.4.1.2879.2.6.7.1.5.1.6	Integer32	read-only	Total number of outgoing calls sent out from this signaling port
I32 sonusSipSigPortStatNumTermCalls	1.3.6.1.4.1.2879.2.6.7.1.5.1.7	Integer32	read-only	Total number of incoming calls received on this signaling port
C64 sonusSipSigPortStatNumTxPdusEx	1.3.6.1.4.1.2879.2.6.7.1.5.1.8	Counter64	read-only	The total number of signalling PDUS sent out on this port
C64 sonusSipSigPortStatNumRxPdus	1.3.6.1.4.1.2879.2.6.7.1.5.1.9	Counter64	read-only	The total number of signalling PDUS received on this port
C64 sonusSipSigPortStatNumTxBytes	1.3.6.1.4.1.2879.2.6.7.1.5.1.10	Counter64	read-only	The total number of signalling BYTES sent out from this port
C64 sonusSipSigPortStatNumRxBytes	1.3.6.1.4.1.2879.2.6.7.1.5.1.11	Counter64	read-only	The total number of signalling BYTES received by this port
sonusSipAcl	1.3.6.1.4.1.2879.2.6.7.1.6
I32 sonusSipAclNextIndex	1.3.6.1.4.1.2879.2.6.7.1.6.1	Integer32	read-only	the next valid index to use when creating a new sonusSipAclEntry
sonusSipAclTable	1.3.6.1.4.1.2879.2.6.7.1.6.2		not-accessible	This is the Application Server List
sonusSipAclEntry	1.3.6.1.4.1.2879.2.6.7.1.6.2.1		not-accessible	An Application Server
I32 sonusSipRemoteAppSvrIndex	1.3.6.1.4.1.2879.2.6.7.1.6.2.1.1	Integer32	read-only	Identifies a remote application server entry.
SON sonusSipRemoteAppSvrName	1.3.6.1.4.1.2879.2.6.7.1.6.2.1.2	SonusName	read-write	Name of the application server.
IP sonusSipRemoteAppSvrIpAddress	1.3.6.1.4.1.2879.2.6.7.1.6.2.1.3	IpAddress	read-write	IP Address of the application server.
ROW sonusSipRemoteAppSvrRowStatus	1.3.6.1.4.1.2879.2.6.7.1.6.2.1.4	RowStatus	read-write	row status of the application server.
sonusSipSignallingMIBNotifications	1.3.6.1.4.1.2879.2.6.7.2
sonusSipSignallingMIBNotificationsPrefix	1.3.6.1.4.1.2879.2.6.7.2.0
NTF sonusSipCallSigPortOpenNotification	1.3.6.1.4.1.2879.2.6.7.2.0.1			This trap indicates that a call signaling port is opened.
NTF sonusSipCallSigPortCloseNotification	1.3.6.1.4.1.2879.2.6.7.2.0.2			This trap indicates that a call signaling port is closed.
sonusSipSignallingMIBNotificationsObjects	1.3.6.1.4.1.2879.2.6.7.2.1

RFC description

Vendor-private MIB for Sonus/GENBAND VoIP platforms; manages Session Initiation Protocol (SIP) signaling statistics and call state monitoring.

Start monitoring Sonus Networks softswitch, e.g. GSX/PSX series (SIP signaling-port/timer/retry status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download SONUS-SIP-SIGNALLING-MIB