Gamma's market leading SIP trunking service eliminates the need for ISDN lines by connecting business directly into Gamma's UK network using an IP backbone enabling full PSTN connectivity. The service is available via DSL or Ethernet connection.

Learn about SIP trunks

• Flexible numbering
• Supports multi sites
• Free calls between IP sites
• Scalable per channel

• Utilise existing equipment
• Emergency services support
• Supports application convergence