Signaling Probe Unit (SPU) delivers real-time, high-performance, high-density protocol monitoring in 4G mobile networks. The SPU enables applications to interrogate traffic between active signaling points in the network and trigger intelligent actions.
The SPU enables DIAMETER or SIP messages carried over IPv4 or IPv6 to be monitored. SCTP/TCP/UDP messages from one or more Ethernet ports can be selectively passed to a user application in real time.
The advantage of the SPU is its powerful real-time monitoring capabilities. The SPU can monitor multiple Ethernet ports and/or TDM ports simultaneously. Users can choose which types of protocols to monitor, such as DIAMETER, and SIP. The probe is configurable to immediately perform certain actions or send certain alerts to the user application in case it detects certain patterns of traffic, allowing networks to instantly react to issues in the network requiring immediate attention.
The SPU is a software probe, which can be installed on any standard physical server running linux or on any popular cloud service (virtual server).
Network Performance Management
The SPU provides real-time monitoring, as well as detailed CDRs and xDRs, which allow network administrators to protect their network from failures, catch and fix problems in real time, and define rules that optimize network operation.
Missed call alert
This is an example of a value-added service that is enabled by the SPU – If a subscriber’s phone is out of reach or is turned off, and they receive a call during that time, they can get a message containing information on their missed calls once their phone reconnects to the network.
Location-based Services
When users move from one area to another in the mobile network, the SPU receives a location update. That location update can be used by marketers and advertisers to send customized messages to subscribers, promoting their business. For example, notifying subscribers of a clothing store sale nearby.
Welcome SMS
The probe can identify when roamers join the mobile network and can be programmed to trigger the sending of a welcome message to the new subscriber. networks can welcome users to their network, and provide them with useful information about the network, the country, emergency numbers, and more.
| SIP stack | RFC 3261 | SIP: Session Initiation Protocol RFC 3262 | SIP Reliability (PRACK) RFC 3263 | SIP: Locating SIP Servers RFC 3264 | SDP Offer/Answer RFC 3265 | SIP Specific Event Notification RFC 1321 | MD5: Message Digest Algorithm RFC 2617 | HTTP Authentication RFC 2806 | URLs for Telephone Calls RFC 2833 | RTP Payload for DTMF & Tones RFC 2915 | NAPTR: Naming Authority Pointer RFC 2976 | SIP INFO Method RFC 3204 | MIME Objects for ISUP and QSIG RFC 3310 | HTTP Digest Authentication – AKA RFC 3311 | SIP Update Method RFC 3329 | Security Mechanism for SIP RFC 3428 | SIP Extension for IM RFC 3489 | STUN: Simple Traversal UDP - NATs RFC 3515 | SIP Refer Method RFC 3581 | Symmetric Response Routing Ext’n RFC 3665 | SIP Basic Call Flow Examples RFC 3711 | SRTP Secure RTP RFC 3891 | SIP ‘ Replaces’ Header RFC 3903 | SIMPLE SIP for IM and Presence RFC 4028 | Session Timers in SIP RFC 4346 | TLS Transport Layer Security RFC 4566 | SDP Session Descrip’n Protocol/IPv6 RFC 4568 | SDP Security for Media Streams |
| DIAMETER stack | IETF RFC 3588 3GPP TS 29.272 |
| API interface | HTTP/1.1, HTTPS, HTTP/2.0 or Files |
