Positioned between PSTN and IP networks, this trunk gateway supports various voice codec conversions and softswitch integration while serving as a key component of next-generation packet-based networks. SMEC's Trunk Gateway interfaces with PSTN networks through E1/T1 and STM-1-class trunk interfaces supporting up to 16,000 channels. Under the control of a softswitch, it performs media conversion and switching for a range of IP subscribers on IP networks via Gigabit Ethernet interfaces.
Applications
- Toll switch replacement
- MGW/TGW for Class 4 VoIP network deployment
- MGW/TGW for Class 5 VoIP network deployment
- PRI/R2 PBX integration and BcN VoIP network interworking
Scalability
Capacity expansion through module addition
Customization
Flexible customization enabled by in-house development of integration protocols
3GPP standard-based
An open, standard-based interface
Key Features & Advantages
- Carrier-grade availability
- capacity expansion through module addition
- open, standard interfaces
- complete redundancy for enhanced stability and reliability
- N+1 redundancy for STM-1 and E1/T1 interfaces
- PSTN interfaces (E1, T1, STM-1)
- MEGACO protocol provided for softswitch integration (H.248, RFC 3015)
- 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 codecs (G.711, G.729A, G.726, G.723.1, EVRC, QCELP, AMR, etc.)
- Tone/DTMF and announcement functions
Network Diagram
