Yamaha RM-CR Reference Manual page 56

Audio specifications
Frequency response
Sampling rate
Bit depth
Latency
Dante
USB
Mic Input
AUX
Speaker Out
Audio interface
Bluetooth
SIP
20 Hz – 20 kHz
48 kHz
24-bit
8 [ms] (Dante In to USB Out, including signal processing)
16 in × 16 out
USB2.0 type-B, Audio Class 1.0
Input: 2ch, Output: 2ch @48 kHz
XLR balanced, Input 2ch
RCA unbalanced (Line Level),
Input: 2ch, Output: 2ch
RCA unbalanced (Line Level),
Output: 2ch
Version 4.2
Supported protocols: HFP (1.6), A2DP, AVRCP (1.6)
Supported codecs: CVSD, SBC, mSBC
Wireless output: Class 2
Maximum communication distance:
10 meters (no obstructions)
Wireless frequencies (operating frequencies):
2,402 – 2,480 MHz
Maximum output power (EIRP): 4.0 dBm (2.5 mW)
Dial, Answer, Hold, Resume, Forwarding,
Call Handling
Do not disturb, Call ID, Voice Mail Notifications (switch configured)
Supports Bridging SIP, USB, BT and AUX Calls. Join, Split, Hold, Resume, 5+1 Lines: Up
Call Bridging
to 2 SIP calls, 1 USB call, 1 Bluetooth call, 1 AUX, plus the user
Codecs G.711, G.722HD, G.729ab, G.726
DTMF
RTP event, SIP in-band, SIP info package
Support
Security SRTP Support (RFC 1889), IETF SIP support (RFC 3261 and companion RFCs)
RM-CR Reference Manual
55