Yealink SIP-T27G Administrator's Guide

Audio Features
152
Examples:
Alert-Info: http://127.0.0.1/Bellcore-dr1
Alert-Info: test/Bellcore-dr1
Alert-Info: Bellcore-dr1
Alert-Info: Bellcore-dr1;x-line-id=1
Alert-Info: <http://10.1.0.31 > ;info=Bellcore-dr1
The following table identifies the different Bellcore ring tone patterns and cadences (These ring tones are designed
for the BroadWorks server).
Bellcore Tone
Pattern
ID
Pattern Cadence
Minimum Duration
(ms)
Nominal Duration
(ms)
Maximum Duration
(ms)
Bellcore-dr1(stand-
ard)
1
Ringing l 2s On 1800 2000 2200
Silent l 4s Off 3600 4000 4400
Bellcore-dr2 2
Ringing Long 630 800 1025
Silent 315 400 525
Ringing Long 630 800 1025
Silent 3475 4000 4400
Bellcore-dr3 3
Ringing Short 315 400 525
Silent 145 200 525
Ringing Short 315 400 525
Silent 145 200 525
Ringing Long 630 800 1025
Silent 2975 4000 4400
Bellcore-dr4 4
Ringing Short 200 300 525
Silent 145 200 525
Ringing Long 800 1000 1100
Silent 145 200 525
Ringing Short 200 300 525
Silent 2975 4000 4400
Bellcore-dr5 5 Ringing 450 500 550
Note: If the user is waiting for a call, “Bellcore-dr5” is a ring splash tone that reminds the user that the DND or
Always Call Forward feature is enabled on the server side.
Alert-Info: ringtone-N/Alert-Info: ringtone-RingN.wav (or Alert-Info:
MyMelodyN/Alert-Info: MyMelodyRingN.wav)
When the Alter-Info header contains the keyword “ringtone-N/ringtone-RingN” or “MyMolodyN/MyMelodyRingN”,
the phone will play the corresponding local ring tone (RingN.wav), or play the first local ring tone (Ring1.wav) in

Yealink SIP-T27G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Gold
Wall mountable	Yes
Display diagonal	3.66 \
Display resolution	240 x 120 pixels
RJ-9 ports quantity	2
USB 2.0 ports quantity	1
Voice codecs	CNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Bluetooth	-
Security algorithms	AES, MD5
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Volume control	Digital
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	210 mm
Width	265 mm
Height	170.5 mm