The H.248 gateways include the G430 and G450 models. Both gateways have Media Module slots for analog, digital, loop start trunks, or T1/E1 capability. G430 and G450 also provide VoIP resources and announcement capabilities.
The following documents provide additional information about administration of Avaya gateways:
Administering AvayaG450 Branch Gateway
Administering AvayaG430 Branch Gateway
AvayaG450 Branch Gateway Overview and Specification
AvayaG430 Branch Gateway Overview and Specification