AMRMG

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.

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

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

AMR Media Gateway