Question 1

How does SIP trunking work for ivr systems?

Accepted Answer

Run your IVR or auto attendant on an Edesy SIP trunk with RFC 4733 DTMF, or build the flow in IVR Studio and attach it to your numbers.

Question 2

What industries use SIP trunking for ivr systems?

Accepted Answer

SIP trunking for ivr systems is commonly used by Banking, Insurance, E-commerce, Utilities 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.

IVR & Auto Attendant SIP Trunking

Key Benefits

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