Sintel CMS is a corporate Call Management System (CMS) solution that enables operators and service providers to centrally manage call routing, number management, and subscriber configuration via a single panel on the Sippy Softswitch infrastructure.
It runs on the customer's Sippy server; it integrates with real-time call flow via the External Translator layer and provides operational teams with both a live call engine and a management interface.
For whom?
- Operators and service providers operating Sippy-based voice infrastructure
- Teams managing multi-environment Sippy installations
- Organizations wanting to manage CLD/CLI rules, profile templates, and subscriber lifecycle from a single panel, rather than via manual API calls
Where does it reside in the call flow?

CMS processes external translator requests; it generates number resolution, CLD/CLI validation, and routing decisions within milliseconds. It is designed for operational scenarios such as re-synchronizing the translator pool after a restart or connection loss.
Core capabilities
Live call engine
- A system that has proven itself in the largest STH VOIP operators in Turkey
- High call routing performance
- Real-time call processing via the External translator protocol
- CLD/CLI validation and CLD ACL rules
- Active call tracking and account caching
- Traceable with OpenTelemetry / SigNoz
Performance
CMS responds very quickly during call setup, resulting in a low PDD impact.
Sippy management panel (SSP)
- Environment profiles — auth rule, incoming route, trunk, trunk connection, DID pool, subscriber definitions
- Sippy account management — account, DID, Follow Me
- Account status (account status) definitions
- Bulk profile/account loading via Excel
- Multi-environment configuration (environment-based separation)
REST API layer
- REST wrapper over Sippy XML-RPC APIs
- Endpoints for Account, AuthRule, Incoming Route, Trunk, DID Pool, System Dictionary
- Partial JSON/XML field support — only the sent fields are processed
Integration
You can quickly integrate it into your own CRM via REST API and profile structure.
Platform and operations
- Web-based management interface (light/dark theme)
- Turkish / English interface
- User management, environment (environment) management, job queue
- SMTP notifications, SSL synchronization jobs
- Optional DB Replication
Why Sintel CMS?
| Topic | Benefit |
|---|---|
| Operational speed | Profile and account changes via panel; repetitive API tasks are automated |
| Call quality | Low-latency CLD/CLI decisions via translator integration |
| Scalability | Centralized management in multi-environment Sippy infrastructures |
| Observability | Structured logging and distributed tracing support |
| Installation | Runs as an agent on the customer's Sippy server; compatible with existing infrastructure |
Typical use cases
- Profile Definitions - Profiles used in subscriber operations are defined (billing-plan, routing-group, ...)
- New subscriber / account opening — A profile is selected, the Sippy account is created via panel or API, DID and Follow Me are assigned.
- CLD restriction — Target number policies are applied via CLD ACL rules, call permissions are checked.
- Live call validation — Every call coming via the External translator is processed through CMS rules.
- IVR - Users who get stuck on CLD ACL rules are notified via IVR.
Technical summary
- Integration: Sippy XML-RPC / REST, External Translator TCP
- Deployment: FreeBSD package
- Security: Environment-based access, trusted host support, SSL/TLS configuration
If you're looking for a single, consistent, and operation-friendly management layer instead of scattered scripts and manual API calls to manage your Sippy infrastructure, Sintel CMS is perfect for you.
For a demo or technical information, contact us.