Grandstream UCM6100 User Manual for 1.0.9.25 - Manual (Page 265)

Firmware Version 1.0.9.25 UCM6100 Series IP PBX User Manual Page 264 of 303
Generate In-Band Ringing
Configure whether the UCM6100 should generate inband ringing or not.
The default setting is "Never".
• Yes: The UCM6100 will send 180 Ringing followed by 183 Session
Progress and in-band audio.
• No: The UCM6100 will send 180 Ringing if 183 Session Progress has
not been sent yet. If audio path is established already with 183 then
send in-band ringing.
• Never: Whenever ringing occurs, the UCM6100 will send 180 Ringing
as long as 200OK has not been set yet. Inband ringing will not be
generated even the end point device is not working properly.
Server User Agent Configure the user agent string for the UCM6100.
Send Compact SIP Headers If enabled, compact SIP headers will be sent. The default setting is "No".
Add "user=phone" to URI
If enabled, "user=phone" will be added to URI that contains a valid phone
number. The default setting is "No".