Question 1

How does SIP trunking work for international calling?

Accepted Answer

Keep your existing international carrier (Twilio, Telnyx, Vonage or Plivo) through bring-your-own-carrier, and use Edesy Indian numbers for local presence in India.

Question 2

What industries use SIP trunking for international calling?

Accepted Answer

SIP trunking for international calling is commonly used by BPO, Export, IT/SaaS, Travel businesses.

Question 3

What is SIP trunking?

Accepted Answer

SIP trunking is a method of delivering voice calls over the internet using the Session Initiation Protocol (SIP). It replaces traditional PRI/ISDN lines, connecting your PBX or contact center to the public telephone network (PSTN) via an internet connection.

Question 4

How is SIP trunking different from PRI?

Accepted Answer

SIP trunking uses an internet connection instead of a physical PRI line. You set the number of concurrent calls on the trunk instead of buying fixed 30-channel PRI circuits, and there is no telco hardware to install on site. Edesy SIP calls cost Rs 0.50/min with a 60-second pulse, and unanswered calls are free.

Question 5

What PBX systems are compatible?

Accepted Answer

Edesy trunks are standard SIP over UDP or TCP on port 5070, so any SIP PBX can connect, either by registering with digest credentials or from an allowlisted IP. There is a step-by-step guide for FreePBX 17 with PJSIP. Use G.711 (ulaw or alaw) on your side. There is no certified-PBX list, so test your system and version.

International Calling via SIP Trunks

Key Benefits

Industries

FAQ

Ready for International Calling?