Positioned between PSTN and IP networks, this media gateway performs a range of voice codec conversion functions and provides softswitch interworking, serving as a key component of next-generation packet-based networks. SMEC’s Media Gateway interfaces with PSTN networks via E1/T1 and STM-0/STM-1 trunk interfaces supporting up to several thousand channels. It performs media conversion and switching for IP subscribers on IP networks through Gigabit Ethernet interfaces under the control of a softswitch.
Applications
- VoIP network deployment
- Interworking between IP-centric and PSTN networks
Various Voice Codecs
Various voice codec algorithms
Scalability
Flexible capacity expansion through module addition
Customization
Flexible customization enabled by in-house development of integration protocols
Key Features & Advantages
- Carrier-grade availability
- Flexible capacity expansion through module addition
- Open, standard interfaces
- Complete redundancy for enhanced stability and reliability
- STM-1 N+1 and E1/T1 N+1 redundancy
- PSTN interfaces (E1, T1, STM-0, STM-1)
- EGACO protocols for softswitch interworking
- Integration with standard PRI interfaces (LAPD, IUA, SCTP)
- Integration with standard R2 interfaces
- SNMP protocol provided for NMS integration
- Centralized operation via EMS/GUI for enhanced convenience
- Flexible customization enabled by in-house development of integration protocols
- Various voice coding algorithms, including G.711, G.729A, G.726, G.723.1, EVRC, QCELP, and AMR
- Tone/DTMF and announcement functions
Network Diagram
