Software Publishing Company Receives Secure, Uninterrupted Voice Connectivity


Product:

SIP Trunk

Highlights


Software Publishing Company Receives Secure, Uninterrupted Voice Connectivity

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Overview

The customer is a well-known aggregator of services including Hosted Voice Services and chatbots

Challenge

The customer required a total of 1,800 SIP channels (10 trunks with 180 channels each). They wanted to avoid complex voice infrastructure and investment on multiple PRI cards. They were also keen on better uptime, SLA and an enhanced call setup.

Solution

  • TTBS delivered SIP trunk over Ethernet with Synchronous Data Hierarchy (SDH) ring architecture
  • SIP trunk was terminated over SBC from the last mile.
  • TTBS provided 10 SIP Trunks with 180 channels each, to ensure redundancy.
  • TTBS SIP Trunk is a P2P circuit with /30 IP address assigned. The same IP address was assigned to the NIC interface of the customer PBX.
  • Codec on both trunks was configured along the internationally approved G.711 A law.
  • Dual-tone multi-frequency (DTMF) method followed RFC 2833.
  • “P-Preferred-Identity” header was included in all SIP INVITEs for correct DID CLIP display on the outgoing calls.    
  • DID no. sending (DNIS) on SIP INVITE “To” header on incoming calls.
  • Keep-alive mechanism was made available through SIP OPTIONS. The expected response was SIP 200 OK from the CPE device.  
  • TTBS provided user login credentials to the customer.

Business Benefits

  • A reliable solution that’s also scalable on the same trunk
  • SLA-backed voice services
  • Call establishment time lower by more than 30% compared to PRI
  • Uninterrupted Voice Services

Solution Architecture:

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