SIP Service Node Device-Level Call Management
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Solution Overview
Problem
Conventional SIP service nodes manage calls and sessions on a per-identity basis, lacking device-level management capabilities such as per-device call management rules, call transfer, and detailed log files that identify which device was involved in a call or session.
Innovation Solution
A SIP service node provides unique device identifiers for multiple devices sharing the same SIP identity, allowing users to manage calls, sessions, or services on a device-level basis through user-defined nicknames and customized rules, enabling device-level call management, routing, and logging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SIP devices share the same SIP identity for unified call management, then call routing and service delivery are simplified, but device-level management capabilities are lost
Solution Approach 1:
The patent segments the management scope from identity-level to device-level by introducing unique device identifiers. Each SIP device is assigned a distinct identifier (such as GRUU or instance ID) that allows individual identification and management while maintaining the shared SIP identity framework. This segmentation enables granular control over call routing, service delivery, and logging for each device without requiring separate SIP identities.
Solution Approach 2:
The service node acts as an intermediary that bridges the shared SIP identity and individual devices. It maintains mappings between the common SIP identity and unique device identifiers, enabling the network to route calls to specific devices based on device-level rules while presenting a unified identity to external callers. This intermediary mechanism resolves the contradiction by providing both unified management and granular control.
2Ease of manufacture
If per-identity call management rules are used, then configuration is simplified, but device-specific call control is impossible
Solution Approach 1:
The call management rules are made dynamic by introducing device identifiers as variables. Rules can be configured to apply to specific devices, groups of devices, or all devices sharing an identity. The service node dynamically selects which rule to apply based on the device identifier associated with the incoming call, enabling both simplified configuration templates and device-specific control when needed.
3Productivity
If services are provided equally to all SIP devices, then service delivery is simplified, but device-to-device transfer capability is lost
Solution Approach 1:
The service node performs preliminary actions by maintaining a registry of device identifiers associated with each SIP identity and their capabilities. This pre-established knowledge base enables rapid device-to-device transfer decisions without complex real-time negotiations. When call transfer is needed, the service node can immediately identify suitable target devices based on pre-configured capabilities and current device states.
4Loss of energy
If system call logs are maintained on a per-identity basis, then logging overhead is reduced, but device-level activity identification is impossible
Solution Approach 1:
The logging mechanism merges device identifier information with existing per-identity call logs. Rather than creating separate log files for each device, the system combines both levels of information into a unified log structure that includes identity-level summaries and device-level details. This approach maintains low logging overhead while preserving complete device activity identification capability.
Data Source
AI summary
Systems, methods, and computer readable media for session initiation protocol (SIP) device-level call/session/service management are disclosed. According to one aspect, a system for SIP device-level management includes a SIP service node that makes available to a user the unique device identifier of a SIP device, where the SIP device is one of multiple devices that register using the same SIP identity, and that allows the user to use the unique device identifier to manage calls, sessions, or services on a SIP device-level basis, which may include performing screening, routing, or logging operations. In one embodiment, the SIP service node is configured to receive SIP device-level management rules for managing SIP calls, sessions, or services on a SIP device-level basis and to use the rules to manage calls, sessions, or services on a SIP device-level basis.