Configure HTTP Enabled Location Delivery (HELD) for E911

HTTP-Enabled Location Delivery (HELD) is a protocol designed to facilitate location information retrieval for Poly VVX, CCX, or Edge E phones. HELD allows these Poly phones to request precise location details from a Location Information Service (LIS). The LIS, acting as a digital map, determines the phone’s location based on predefined network mapping and sends this information back to the requesting device, typically in the form of a location URI or civic address. HELD is essential for various location-based services, enabling devices to accurately share their locations for purposes such as navigation, emergency assistance, and geolocation-based applications.

To enable HELD, you must make changes to your external trunk settings and the base settings for your Poly VVX, CCX, or Edge E phones.

External trunk

1. Click Admin.
2. Under Telephony, click Trunks.
3. Click the External Trunks tab.
4. Select your trunk.
5. Click the General expander.
6. Under Outbound, select the Location Conveyance box.
7. Click Save External Trunk.

Base settings for Poly VVX, CCX, or Edge E phones

1. Click Admin.
2. Under Telephony, click Phone Management.
3. Click the Base Settings tab.
4. Select the base settings for your Poly VVX, CCX, or Edge E phones.
5. Click the General expander.
6. Under Enhanced 911, select the Use HTTP-Enabled Location Delivery (HELD) check box.
7. In the Emergency Routing Service Account Identifier box, enter the account ID that you received from your emergency service provider.
   Note: If the LIS provider requires token authentication, enter the token ID instead of the account ID.
8. In the Location Information Server URL box, enter the URL to send HELD requests.
9. Click Save Base Settings.