# AMR Media Gateway

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Descriptions

In order to expand the UltraWAVE R4S network capacity to provide services to more subscribers, Altobridge developed the cost-effective media gateway solution for supporting the AMR/HR features in BSS to triple the UBSC capacity without scrapping the BSS hardware. The AMR MG provides DS0 circuit to RTP conversion and EFR (16K) and AMR (8K) grooming functions to enable the circuit UBSC to work directly with the UltraWAVE softswitch with triple radio capacity. The AMR MG allows UBSC to bypass the BSS TRAU to bring the ATer interface to core network directly. The AMR MG bridges the ATer/TDM to/from BSS and ATer/IP from/to the TRAU in the AudioCodes trunking gateway.

See Also

• AMR MG Parameter Dictionary

Feature List

Feature | Descriptions
Capacity | Up to 90 simultaneously voice channels
Interface | ATer/TDM interface to/from BSS ATer/IP interface to/from the TRAU in the AudioCodes trunking gateway SNMP for management MGCP for control MTP2 on TDM interface Sigtran on IP interface
Basic Services | Configurable TDM interface type E1/T1 8Kbps/16Kbps sub channel encoding/decoding AMR/HR (8Kbps) multiplexing FR/EFR (16Kbps) multiplexing 40ms jitter buffer Ater conversion between RTP packets and TRAU frames 20/40/60ms configurable RTP interval RTCP XR QoS Report Support EFR DTX on the uplink direction Processing delay less than 10 ms Idle/Bad frame handling
Operation and Maintenance | SNMP network management IE browser client console Web page based graphic user interface Real time status display System parameter maintenance Remote software upgrade via TFTP Debugging via serial port

AMR MG Parameter Dictionary

Parameter | Definition | Range
System | -- | --
•Local IP | Specify the IP address of the MG. | Dotted decimal format
•Netmask | A netmask is a 32-bit mask used to divide an IP address into subnets and specify the networks available hosts.
•Gateway | Specify the IP address of the gateway used to pass traffic from MG to other subnets.
•System ID | Specify the system ID of the media gateway. | 0 - 31
•Sub System ID | Specify the subsystem ID of the media gateway. | 0 - 1
•Proxy IP | Specify the IP address of the RTP proxy. | Dotted decimal format
•Port Type | Specify the type of MG physical interface. | •E1 •T1
•Interface ID | Specify the interface identifier to the MG physical interface. | 0 - 65535
•CRC4 Flag | Enable or disable Cyclic Redundancy Check on the MG physical interface. | •Enable •Disable

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