Phone Features
33
DTMF
The phone provides 2 mechanisms for transmitting
Æ
DTMF information,
inband and DTMF in RTP (see RFC 2833). The phone does not support out-
band DTMF through SIP messaging. There are no configuration parame-
ters on the phone which control the use of DTMF.
A process of negotiation is used during call-setup to determine which form
of DTMF signaling will be used. The phone supports send DTMF informa-
tion in response to the user pressing the keys 0-9 and * and # when in a
call connected state.
When a call is made from a phone it will "Offer" the remote endpoint sup-
port for DTMF in RTP (this is carried in the SDP protocol). If the far end
does not "answer" that it can support DTMF in RTP then DTMF in-band will
be used otherwise DTMF in RTP will be used.
When DTMF in RTP is negotiated the phone will always "offer" payload 100
to carry the DTMF events. The far end may accept and confirm this payload
or it may suggest a different payload value. In this case the phone will fol-
low that payload preferred by the far end. On an incoming call the phone
will follow the payload value suggested by the far end.
The phone is not capable of retrieving or understanding DTMF in-band or
DTMF in RTP information it may receive. This information is normally used
by application or media servers to control feature access. If the user press-
es keys when in a call connected state and in-band DTMF has been nego-
tiated he will hear the tones being sent in the speech path (handset only).
If DTMF in RTP has been negotiated he will here clicks as speech packets
are removed and replaced with DTMF in RTP key events.
Содержание HiPath 8000
Страница 1: ...HiPath 8000 optiPoint 410 S V7 0 optiPoint 420 S V7 0 Administrator Manual ...
Страница 106: ...Extended Administration 106 in the SIP Registration 1 tab in the IP Phone Configuration Gateway Server area ...
Страница 114: ...Web Interface 114 Network IP and routing Network Addresses Æ page 57 ...
Страница 115: ...Web Interface 115 SIP environment Configure System Information Æ page 61 ...
Страница 116: ...Web Interface 116 SIP features SIP Features Æ page 64 Transfer on Ringing ...
Страница 117: ...Web Interface 117 Quality of Service Quality of Service QoS Æ page 58 ...
Страница 118: ...Web Interface 118 File transfer optiPoint 410 420 standard advance Software Update Transferring Files Æ page 74 ...
Страница 120: ...Web Interface 120 Time and date Configuring Date and Time Æ page 67 ...
Страница 121: ...Web Interface 121 SNMP Use SNMP Æ page 92 Speech Change Speech Parameters Æ page 93 ...
Страница 122: ...Web Interface 122 Ringer settings Configure Ringer Settings Æ page 94 ...
Страница 124: ...Web Interface 124 Function keys Function Key assignments Æ page 74 ...
Страница 126: ...Web Interface 126 Function key Select a function optiPoint 410 420 economy economy plus ...
Страница 128: ...Web Interface 128 Function key Line key optiPoint 410 420 advance standard Multiline Æ page 68 ...
Страница 132: ...Web Interface 132 Dialling Properties optiPoint 410 420 advance standard Dialling Properties Æ page 71 ...
Страница 137: ...Web Interface 137 Address Book Address Book Æ page 162 WAP WAP Settings Æ page 81 ...
Страница 141: ...Web Interface 141 RTP Statistics These parameters are used for development only ...
Страница 142: ...Web Interface 142 QoS Data Collection These parameters are used for development only ...
Страница 145: ...Web Interface 145 Restore factory settings Restore Factory Settings Æ page 98 Port Control Port Control Æ page 99 ...
Страница 146: ...Web Interface 146 FPN Port Settings Only available in Web Interface ...