Avaya 555-245-600 manual SCC1 Media Gateway

Avaya Application Solutions platforms

Figure 27: SCC1 Media Gateway

Non-IPSI connected Media Gateway - Typically, one of every five Port Networks (PNs) contains one or two IPSI circuit packs. The remaining PNs are referred to as non-IPSI connected. Non-IPSI connected PNs get their control information from the servers through one of the PNs that does contain an IPSI. Such control messages are “tunneled” through the circuit-switched network. The system software controls this communication and allocation. The software automatically routes the control messages through an appropriate IPSI. There is no need to administer which IPSI controls the non-IPSI connected PNs. The system automatically allocates those resources, and also compensates for any component failure.

Remote MCC1/SCC1 Media Gateways - The control network for an S8700 with MCC1 or SCC1 Media Gateway can be extended to an IPSI in a remote media gateway. But for cost effectiveness and straightforward installation, Avaya recommends that all of the IPSI-connected media gateways be collocated with the S8700 and Ethernet switches. The circuit-switched network dictates the available options.

Non-IPSI connected media gateways’ circuit-switched network can be extended through all the options available with DEFINITY G3r. Center Stage Switch configurations can use fiber extenders or DS1-Converter (DS1-C) facilities, allowing the media gateway separation to be essentially limitless. When ATM-PNC is used, the media gateway separation is also essentially limitless (see ATM network on page 91).

90 Avaya Application Solutions IP Telephony Deployment Guide