Cisco CME SIP trunk restoration for a marine IT provider
Marine IT Specialist, Superyacht Industry
Outbound calling restored on a Cisco Unified Communications Manager Express system with more than 20 users, by replacing a stopgap device with a direct SIP trunk to the provider. Completed in one week.
At a glance
- Category
- Network Engineering / VoIP
- Region
- Malta
- Client
- Managed IT for superyachts
- Services
- Managed IT Operations
- Duration
- Feb 2026 (one week)
- Engagement model
- Fixed-price project
The challenge
The client runs Cisco Unified Communications Manager Express (CME) with more than 20 registered users. Internal calls worked, but outbound calling to the internet telephony service provider had stopped because of SIP configuration issues.
A third-party device had been added as a temporary workaround. It had not fixed the core problem and was not a stable long-term setup.
What we did
- Ran an online diagnostic session and proposed restoring the original, supported architecture: a direct SIP trunk between CME and the provider.
- Removed the workaround device and its related configuration.
- Restored and validated SIP trunk registration with the provider.
- Reviewed and corrected call routing, translations and dial-peer configuration.
- Validated inbound and outbound calling end to end.
Outcome
- Fixed-price contract completed in one week, from 20 to 27 February 2026, with its milestone accepted.
- The client reviewed the work as exceeding the scope of works and rated it 5.0 on Upwork.
What we worked with
Client feedback
“Profesional service throughout the project which exceeded the scope of works”
Upwork job: “CME SIP Calling Restoration”
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