Complete SIP Integration between Yeastar P560 and Autocalls.ai Platform Inbound & Outbound
Budget: $30 – $250 USD
Project Description:
We are seeking an experienced SIP and network engineer to successfully complete a full SIP trunk integration between our Yeastar P560 PBX and the Autocalls.ai platform.
We have been working directly with the Autocalls.ai support team, but still unable to complete the outbound call configuration. Inbound calls are partially working, but still not fully stable, and outbound calls return a SIP 404 error.
We need someone with deep experience in SIP, NAT, PBX routing, and Yeastar systems, who can:
Scope of Work:
- Perform a full integration between Yeastar P560 and Autocalls.ai.
- Must include both inbound and outbound call flow working without any SIP errors (e.g. 404, 401, one-way audio).
- Must ensure signaling and audio are routed properly.
- Perform the setup remotely via AnyDesk, and walk us through each step performed.
- Provide clear documentation of all settings, so we can replicate the configuration later on other Yeastar devices.
- Troubleshoot and solve any issues related to:
- NAT (Static NAT, SIP ALG, etc.)
SIP registration or peer-based trunk
- Transport protocol (TCP/UDP)
- Firewall or port forwarding
- Call routing logic (DID, outbound route, inbound route, etc.)
- Optional: assist in log analysis (Yeastar SSH logs, SIP traces)
Important Notes:
- Partial delivery is not accepted.
- Project will be considered completed only if both inbound and outbound calls are working fully and stably.
- Milestone will not be released until the project is fully and successfully completed.
- A time slot will be scheduled for remote access via AnyDesk, and coordination will be in real-time.
- The engineer must explain each step taken for transparency and documentation purposes.
Requirements:
- Strong experience with SIP protocol, Yeastar PBX (especially P-Series), and third-party integrations.
- Must have handled similar SIP trunking issues before (especially 404 errors or unrecognized invites).
- Proven ability to diagnose and fix complex PBX-to-platform issues.
Additional Info:
We have already trying:
- Whitelisted all relevant IPs and ports.
- Enabled SSH for log analysis.
- Attempted integration with another Yeastar S20 device (same issue).
- Worked directly with Autocalls support, but without resolution so far.
- You may review chat logs with their engineer if needed to understand the current progress.
Please apply only if you're confident in solving advanced SIP/NAT routing problems and can ensure a clean and final working integration.
We are seeking an experienced SIP and network engineer to successfully complete a full SIP trunk integration between our Yeastar P560 PBX and the Autocalls.ai platform.
We have been working directly with the Autocalls.ai support team, but still unable to complete the outbound call configuration. Inbound calls are partially working, but still not fully stable, and outbound calls return a SIP 404 error.
We need someone with deep experience in SIP, NAT, PBX routing, and Yeastar systems, who can:
Scope of Work:
- Perform a full integration between Yeastar P560 and Autocalls.ai.
- Must include both inbound and outbound call flow working without any SIP errors (e.g. 404, 401, one-way audio).
- Must ensure signaling and audio are routed properly.
- Perform the setup remotely via AnyDesk, and walk us through each step performed.
- Provide clear documentation of all settings, so we can replicate the configuration later on other Yeastar devices.
- Troubleshoot and solve any issues related to:
- NAT (Static NAT, SIP ALG, etc.)
SIP registration or peer-based trunk
- Transport protocol (TCP/UDP)
- Firewall or port forwarding
- Call routing logic (DID, outbound route, inbound route, etc.)
- Optional: assist in log analysis (Yeastar SSH logs, SIP traces)
Important Notes:
- Partial delivery is not accepted.
- Project will be considered completed only if both inbound and outbound calls are working fully and stably.
- Milestone will not be released until the project is fully and successfully completed.
- A time slot will be scheduled for remote access via AnyDesk, and coordination will be in real-time.
- The engineer must explain each step taken for transparency and documentation purposes.
Requirements:
- Strong experience with SIP protocol, Yeastar PBX (especially P-Series), and third-party integrations.
- Must have handled similar SIP trunking issues before (especially 404 errors or unrecognized invites).
- Proven ability to diagnose and fix complex PBX-to-platform issues.
Additional Info:
We have already trying:
- Whitelisted all relevant IPs and ports.
- Enabled SSH for log analysis.
- Attempted integration with another Yeastar S20 device (same issue).
- Worked directly with Autocalls support, but without resolution so far.
- You may review chat logs with their engineer if needed to understand the current progress.
Please apply only if you're confident in solving advanced SIP/NAT routing problems and can ensure a clean and final working integration.