What is UUI in SIP?
The IMG supports sending UUI (User to User Information) between a called and calling party. User to User Signaling provides a means of communication between two end users through the signaling network for the purpose of exchanging information of end to end significance.
What is UUI header?
The User-to-User (UUI) header can be used to send call control data. This data is inserted by the application initiating a session and used by the application accepting the session. It is not used for any basic SIP functionality.
What are the mandatory header in SIP?
Call-ID. The Call-ID header field is mandatory in all SIP requests and responses. It is used to uniquely identify a call between two user agents.
What is UUI in telecom?
Genesys Cloud’s User to User Information (UUI) support allows you to send data along with outbound calls as well as receive data from inbound calls. Genesys Cloud adheres to the IETF UUI specification for UUI data.
What is diversion header in SIP?
The Diversion header prevents the pertinent SS7 or ISDN redirection information from being lost in the SS7/ISDN to SIP conversion. When SS7 redirection information is received on the incoming side, it is relayed in the Diversion header on the outgoing SIP side.
Are SIP headers case sensitive?
Extensions MUST be consistent with the SIP conventions for case sensitivity. Methods MUST be case sensitive. Header field names MUST be case insensitive.
What is Max-forwards in SIP?
The Max-Forwards header limits the number of times a request can be forwarded on its way to the recipient. The number is reduced by one each time the request is forwarded. The Max-Forwards header prevents a request from endlessly circling the SIP network if the recipient cannot be found. The default value is 70.
What is P preferred identity?
The P-Preferred-Identity header field is used from a user agent to a trusted proxy to carry the identity the user sending the SIP message wishes to be used for the P-Asserted-Header field value that the trusted element will insert.
What is invite in SIP?
A SIP INVITE is a SIP request message that initiates a SIP call. A SIP INVITE is made up of lines of text. The first line in an INVITE is called a Request-Line, which is followed by more lines of text called “headers”.
What is the difference between from and contact header in SIP?
2 Answers. Show activity on this post. From header is the logical identity of the user that will be used for auth/callerid (i.e. sip:[email protected]). The Contact header is the TCP/IP network address where you should send all packets to (i.e. sip:[email protected]:43085;transport=tcp) – IP/port/transport info.
What is SIP ack?
SIP requests
ACK = Confirms an INVITE request. BYE = Ends a session. CANCEL = Cancels establishing of a session. REGISTER = Communicates user location (host name, IP) OPTIONS = Communicates information about the capabilities of the calling and receiving SIP phones.
What is the RFC for SIP?
The SIP server has full support for RFC 3261.
What is SIP display name?
A display-name is a string containing a name for the identified user (for example, “Alice”). SIP identities of this form commonly appear in the To and From header fields of SIP requests and responses. A user may have many identities that they use in different contexts.
What is PPI SIP?
SIP Parameters : P-Preferred-Identity
The user sending the SIP message wishes to be used for the P-Asserted-Header field value that the trusted element will insert. A P-Preferred-Identity header field value MUST consist of exactly one name-addr or addr-spec. There may be one or two P-Preferred-Identity values.
What is Pani header?
The PANI header is a 3GPP-defined header and indicates to the IMS network over which access technology the UE is attached to the IMS, and also the location of the user.
What is Max forwards in SIP?
What is basic SIP call flow?
Basic SIP session setup involves a SIP UA client sending a request to the SIP URL of the called endpoint (UAS), inviting it to a session. If the UAC knows the IP address of the UAS, it can send the request. Otherwise, the UAC sends the request to a proxy or redirect server to locate the user.
What is LR in Route header?
lr parameter is added to indicate that the router is a loose router. If the SIP router is strict, then the URI will not have the lr parameter. In the strict routing,the Request-URI is overwritten so we keep the destination user agent (the contact address) in an additional Route header field value.
What is PAI header in SIP?
The PAI or PPI Header in Incoming and Outgoing SIP Calls feature is an enhancement to support the PAI or the PPI privacy header for incoming and outgoing calls at the global level and dial-peer configuration mode.
What is 180 ringing in SIP?
180 Ringing – The Destination User Agent has received the INVITE message and is alerting the user of call. 181 Call Is Being Forwarded – Optional, send by Server to indicate a call is being forwarded.
What are the six basic methods used with SIP?
SIP Requests are answered with SIP responses, of which there are six classes:
- 1xx = Informational responses, such as 180 (ringing)
- 2xx = Success responses.
- 3xx = Redirection responses.
- 4XX = Request failures.
- 5xx = Server errors.
- 6xx = Global failures.
Is SIP TCP or UDP?
Session Initiation Protocol (SIP) is transported over UDP and TCP. It is an Application Layer control protocol that creates, modifies, and terminates sessions with one or more participants. SIP is a peer-to-peer protocol. SIP uses design elements similar to the HTTP request/response transaction model.
What RFC 2543?
Standards Track [Page 1] RFC 2543 SIP: Session Initiation Protocol March 1999 SIP invitations used to create sessions carry session descriptions which allow participants to agree on a set of compatible media types. SIP supports user mobility by proxying and redirecting requests to the user’s current location.
What are SIP methods?
The Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications. SIP is used in Internet telephony, in private IP telephone systems, as well as mobile phone calling over LTE (VoLTE).
What is ICID value?
The icid-value identifies a dialog or transaction outside a dialog. The icid-value is used to correlate charging records and is a globally unique value. orig-ioi. (Originating Inter Operator Identifier) This parameter is optional and provided by the network.