The MG-IAMM Maintenance Object resides on the Integrated Analog Media Module (IAMM) which is located on the main board of the TGM550 gateways.
The Integrated Analog Media Module is not field-replaceable.
For the G430 or G450, the Integrated Analog Media Module consists of six (6) fixed configuration analog ports:
Ports 1 through 4 are fixed as loop start CO trunk ports.
Ports 5 and 6 may be administered as analog stations, DID trunks, or external alarm ports.
Ports 4 and 5 are used by the gateway processor for emergency transfer relay (ETR) purposes.
The Integrated Analog Media Module is a non-field-replaceable module. Slot #3 is virtual and designated as the integrated analog media module slot. Slot #3 supports the IAMM exclusively.
For the G430 and G450, the Integrated Analog Media Module consists of three (3) fixed configuration analog ports:
Port 1 is fixed as an analog trunk port.
Ports 2 and 3 are fixed as analog line ports.
Ports 1 and 2 are used by the gateway processor for emergency transfer relay (ETR) purposes.
On a G430-BRI, slot #3 is virtual and designated as the integrated analog media module slot.
On a G450, slot #7 is virtual and designated as the integrated analog media module slot.
Administration will only allow port one to be administered as a loop start CO trunk. Ports 2 and 3 may only be administered as analog stations, DID trunks, or external alarm ports. Ports 1 and 2 are used by the emergency transfer relay (ETR).
The TGM550 is the Gateway blade which is integrated with the Juniper Networks Services Routers. It provides an internal interface to the Juniper chassis backplane, 2 analog lines, and 2 analog trunks. Ports 2 and 3 are used by the emergency transfer relay (ETR).
The G450-DCP allows 4 trunks and 2 analog lines. Ports 4 and 5 are used by the ETR.
The G450-DS1 allows 1 trunk and 2 analog lines. Ports 1 and 2 are used by the ETR.
