Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
332
call is actually established. Current implementation supports early media through the
183 message. When the caller receives a 183 message with SDP before the call is
established, a media channel is established. This channel is used to provide the early
media stream for the caller.
180 ring workaround defines whether to deal with the 180 message received after the
183 message. When the caller receives a 183 message, it suppresses any local ringback
tone and begins to play the media received. 180 ring workaround allows IP phones to
resume and play the local ringback tone upon a subsequent 180 message received.
Procedure
180 ring workaround can be configured using the configuration files or locally.
Configuration File
<y0000000000xx>.cfg
Configure 180 ring workaround.
Parameter:
phone_setting.is_deal180
Local
Web User Interface
Configure 180 ring workaround.
Navigate to:
For
SIP-T48G/T46G/T42G/T41P/T40P/T2
9G/T27P/T27G/T23P/T23G/T21(P)
E2/T19(P) E2/CP860:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
For SIP VP-T49G:
http://<phoneIPAddress>/servlet
?m=mod_data&p=features-gen
eral&q=load
Details of the Configuration Parameter:
Parameter
Permitted Values
Default
phone_setting.is_deal180
0 or 1
1
Description:
Enables or disables the IP phone to deal with the 180 SIP message received after the
183 SIP message.
0-Disabled
Summary of Contents for SIP-T2 Series
Page 1: ......
Page 14: ...Administrator s Guide for SIP T2 Series T19 P E2 T4 Series CP860 IP Phones xiv...
Page 45: ...Getting Started 23 For SIP T42G T41P T40P Desk Mount Method Wall Mount Method Optional...
Page 47: ...Getting Started 25 For SIP T23P T23G Desk Mount Method Wall Mount Method Optional...
Page 122: ...Administrator s Guide for SIP T2 Series T19 P E2 T4 Series CP860 IP Phones 100...
Page 504: ...Administrator s Guide for SIP T2 Series T19 P E2 T4 Series CP860 IP Phones 482...
Page 758: ...Administrator s Guide for SIP T2 Series T19 P E2 T4 Series CP860 IP Phones 736...
Page 1005: ...Appendix 983...