SVI_MGC SS7 Media Gateway Controller
FUNCTIONALITY continued
ISDN (IUA) Support
The SVI_MGC allows for the provision of ISDN services via IUA allowing for ISDN PSTN breakout and connectivity to corporate and private networks over ISDN. With the ability to inter-work to both the SS7 and VoIP networks, provision of both PSTN and VoIP routing to ISDN based networks opens up many new revenue streams.
R2, CAS and Analogue Support
The SVI_MGC has full MGCP support allowing for the control of legacy protocols that are resident on the media gateway.
Comprehensive Media Gateway support
The SVI_MGC can control any media gateways which support the MGCP or MEGACO media gateway control protocols. Multiple different media gateways can be controlled by a single SVI_MGC allowing for media gateways to be chosen for a particular interconnect due to functional and budgetary considerations and not tied to a single vendor.
Below is a matrix of media gateways that the SVI_MGC has live interop with. If any media gateway is not present please contact Squire Technologies for an updated list.
| Cisco | AS5xxx | MGCP |
| Audiocodes | Mediant | MGCP |
| Nuera | GX-8 GX-21 | MGCP |
| Lucent |
MAX TNT |
MEGACO |
Intelligent Call Routing
As part of the standard SVI- SCRAM functionality the SVI_MGC provides high performance routing algorithms allowing for the setup of routing depending on a number of criteria including:
Called and Calling party number information
Time of day
Originating Route
Route quality (ASR,PDD,ACD)
These criteria can be combined together to form powerful algorithms ensuring that the service being delivered is run continuously prioritising the highest revenue generating routes available for a session.
Number of call limitations can also be applied to an incoming endpoint and also to an outgoing endpoint allowing for the allocation of the maximum number of incoming or outgoing calls to a given endpoint.
Route Quality Enhance
The SVI_MGC includes comprehensive retry facilities that allow for multiple reattempts on an outgoing leg of a session to alternate endpoints before the incoming leg of the session is deemed as failed. The system can be programmed to react differently depending on the call failure reason or if a particular end point is congested. The alternative routes are calculated using the intelligent call routing algorithms choosing the alternative routes in order of priority. This increases the ASR of the incoming leg therefore increasing the quality and revenue of this route.
Protocol Manipulation
The SVI_MGC has the ability to manipulate information within the protocol enabling parameters with in the signalling protocol to be tuned to a particular interconnect.
The called and calling party information can also be manipulated allowing for the stripping, deleting, replacing and prefixing of digits.
Multi-Protocol support
The SVI_MGC supports and inter-works directly between SS7, SIP and H.323. CAS, R2 and Analogue inter-works with SS7, SIP and H.323 via MGCP providing seamless interconnect of disparate networks running different types and versions of VoIP and PSTN protocols.
Standard Third Party Billing and Routing Capabilities
The SVI_MGC has full RADIUS support allowing for integration with third party RADIUS servers for AAA services allowing for easy integration into existing or preferred billing platforms. Though the SVI_MGC has powerful on-board routing it may be desirable to interconnect with a third party traffic management system through the RADIUS interface to control all.htmlects of routing.
SNMP Support
To provide standard interfaces into maintenance systems the SVI_MGC supports configurable SNMP traps and statistical reporting mechanisms allowing for remote management of the QoS of the routes. Any system resource can be configured to raise traps enabling the user to monitor only identified resource or the whole system.
Statistical reporting can also be configured to report on a route or system basis to include
• Call Statistics (total, ringing, answered)
• ASR
• PDD
• ACD
• QoS
Remote Management
To enable secure remote configuration and management the SVI_MGC provides a comprehensive MMI over IP allowing for full protected management of the system either onsite or remotely.
High Availability
Two SVI_MGCs can also be configured into a dual plane worker-standby solution providing true high availability in the network. The HA pair use both a virtual IP addressing and sharing point-codes across both nodes presenting a identity across the two planes for network and PSTN communication. On failure of a worker node the standby node will instantly take over processing of the calls retaining where possible calls in an answer state.
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