BX7A Industrial SIP Phone Bluetooth Mobile Line Guide covers mobile pairing, contact sync, DSS key setup, call control, hold, mute, volume, and DTMF operations.
The BX7A Bluetooth Mobile Line connects to mobile phones (supports both Android and iOS) and controls mobile calls. Main features include:
Contact synchronization
DSS key configuration
Make & answer calls
Call Hold / Resume
Mute / unmute
Volume adjustment
DTMF input during calls
Enable Bluetooth on the phone: Go to Phone Settings → Connected Devices → Enable Bluetooth. Pair and connect your phone. A prompt will appear: "Sync Contacts?"
Tap "Yes" to sync contacts to the phone (No = no real-time sync). Check contacts in the Mobile Contacts directory.
• Add/delete mobile contacts → Click update on the phone to sync.
• Without clicking update, contacts will NOT auto-refresh.
Set the DSS Key Type to Mobile.
• Green icon = Bluetooth connected
• Gray icon = Disconnected/out of range
• Back in range: green icon flashes → reconnects → solid green
Outgoing calls: Configure a DSS key as Line → Mobile (web UI or LCD). Press the Mobile line key, dial a number, and call.
Incoming calls: Call the paired mobile phone number. Answer on the BX7A (hands-free, handset, or headset).
Hold and unhold work normally during Bluetooth calls. Audio is clear. Status syncs between the phone and mobile.
Mute and unmute functions work properly during calls.
Call volume can be adjusted normally on the phone during calls.
DTMF codes can be entered normally during calls.
BX7A can sync the native contacts from paired mobile phones (Android & iOS).
Note: Call history sync is NOT supported yet.
Press the "Unfold" button on the right side of BX7A. Long-press the SIP key to configure:
• Title: Custom name
• Type: "Line"
• Line: "Mobile"
Open the BX7A Contacts interface → tap the Sync button on the left.
Select the second option under Import: Import from other device.
If your phone supports Bluetooth, select "Yes" → OK.
Select "No" to use the default: Import from phone storage.
This page shows sync instructions. Tap Next to continue.
Select your paired Bluetooth device (only connected devices appear).
If no devices found: you will be directed to Bluetooth settings to pair first. Then return and tap RESCAN.
After mobile sync succeeds: a popup shows total contacts.
Tap OK to save to BX7A.
Tap Cancel to discard.
After successful save, the phone returns to the main Contacts screen. Sync complete.
Note: UI supports English, Simplified Chinese, and Traditional Chinese.
