DVK-BTM521 Laird Technologies, DVK-BTM521 Datasheet - Page 70

• Manufacturer Part Number: DVK-BTM521
• Description: BT MM DEV KIT
• Manufacturer: Laird Technologies
• Type: Transceiver, Bluetoothr

Specifications of DVK-BTM521

• Frequency: 2.4GHz
• Interface Type: RS-232
• Processor Series: BTM521
• Silicon Manufacturer: Laird Technologies
• Kit Application Type: Communication & Networking
• Application Sub Type: Bluetooth
• Kit Contents: Development Board & Software Tools
• Features: Supports CSR
• Rohs Compliant: Yes
• For Use With/related Products: BTM521
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: DVK-BTM521

BTM520/521
Bluetooth
AT COMMAND SET
REFERENCE
70 www.lairdtech.com
®
Multimedia Plus Module
7.2.4 Release Entire Connection from AG (#1_4.3)
7.2.5 Signal Incoming Call from AG to HF (#4_4.13)
7.2.6 Signal “call answered at AG” to HF (#4_4.13.3)
7.2.7 Signal Outgoing Call Status from AG to HF (#8_4.18; #9_4.19; #10_4.20)
AT+HFGH
Release connection from local audio gateway instance. An ongoing call will be terminated
and a audio connection will be released if existing, SLC will be released anyway.
Response:
On audio disconnection:
On SLC disconnection:
This command is not permitted to be issued in a call setup state (incoming / dialling /
alerting, ATI66 = 5 or 6) and will return with ERROR 63 in that case.
Please also refer to Section 6, page 92.
AT+HFGC”<number_string>”,<type
Signal an incoming call by sending “RING” and “+CLIP:”<number_string>”,<type
to HF periodically. The <number_string> field represents the phone number of the ringing party.
The type field specifies the format of the phone number provided, and can be one of the
following values:
Please refer to the Hands-free Profile Specification [5].
The HF is now expected to answer or to reject the call. Optionally, an incoming call can
be answered or rejected at the AG side.
AT+HFGCA
If no call is active (check with AT+HFGC?, refer to section 7.2.16):
Signal from HFG to HF that an incoming call has been answered at the HFG. On the SLC
the indicators “+CIEV:2,1” (call=1) and “+CIEV:3,0” (callsetup=0) are sent to the HF
subsequently. The status of the incoming call is changed to active.
If one or more calls are active (check with AT+HFGC?, refer to section 7.2.16):
Signal from HFG to HF that all active calls are put on hold and the waiting call has been
answered at the HFG. On the SLC the indicators “+CIEV:3,0” (callsetup=0) and “+CIEV:4,1”
(callheld=1) are sent to the HF subsequently. The status of the active call(s) is changed to
held and the status of the waiting call is changed to active.
The states of all current calls can be checked by AT+HFGC?
Response:
AT+HFGC1[”<number_string>”,<type
This command shall be used as successful response to a HF initiated call, indicated by one
of the following asynchronous messages:
“OK” is sent as successful response to the HF’s request.
Signal an outgoing call status by sending “+CIEV:3,2” (callsetup=2) indicator to HF. If an
audio connection is not present yet, it will be initiated.
• values 128-143: The phone number format may be a national or international format,
• values 144-159: The phone number format is an international number, including the
• values 160-175: National number. No prefix nor escape digits included.
• HFG”Dnnn”
• HFG”D>nnn”
• HFG”L”
and may contain prefix and/or escape digits. No changes on the number presentation
are required.
country code prefix. If the plus sign (“+”) is not included as part of the number and
shall be added by the AG as needed.
<cr,lf>OK<cr,lf>
(redial last number)
<cr,lf>HFG”AU0”<cr,lf>
<cr,lf>NO CARRIER 111F<cr,lf>
(dial number <nnn> given by HF-unit)
(dial from AG memory location nnn)
dec
dec
>
>]
(only if audio connected)
Laird Technologies
dec
>”