Must-have (core):
Teams Phone (Phone System) architecture - deep on Direct Routing; knows how it differs from Operator Connect and Calling Plans, and why Direct Routing is the right fit here (customer + telco + SBC).
Hands-on SBC configuration - AudioCodes (Mediant) and/or Ribbon/Sonus (SBC Core / SWe): trunks, IP profiles, coders, routing rules, HA/failover.
SIP & SIP trunking - SIP signaling, SDP, codecs (G.711/OPUS), transcoding, media bypass; ability to read a SIP ladder.
Direct Routing plumbing - PSTN gateways, voice routes, PSTN usages, online voice-routing policies.
Dial plans & number normalization - tenant dial plans, regex normalization rules, effective dial plan validation.
Telco/carrier coordination - working the SIP trunk, DID ranges, and number porting with the telco provider.
Emergency calling - E911 / agile emergency calling, Location Information Service.




Voice troubleshooting - SBC logs, syslog/Wireshark traces, Teams call analytics / Call Quality Dashboard.
Voice apps - resource accounts, auto attendants, call queues, caller-ID policies.
Voice networking - TLS/SRTP certificates, firewall/NAT, QoS, media ports.

Nice-to-have: MS-720 (Teams Voice Engineer) cert; AudioCodes/Ribbon vendor certification; SBC redundancy/HA design; contact-center or analog/SIP gateway integration experience.

Disclaimer: This job posting has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.

📌 Voice Consultant Bengaluru
🏢 Astreya
📍 Bengaluru