You are here: CSP Developer’s Guide: Overview > 11 Call Routing > Host Notification of Route Derivation
Host Notification of Route Derivation
You can configure the router to send a Request For Service message to a specific host port after a route has been derived.
Figure 11-10 Host Port Routing of Request for Service
To enable this feature, insert the following TLVs into the PPL Config Bytes of the CH component:
• Special Instructions TLV (0x001D)
• Instruction # 0x01 (Allocate Entity)
• Send Route Control to Router TLV (0x004D)
See the API Reference for information on TLV formats.