...
| Table of Contents | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Channel Associated Signaling (CAS)
Channel Associated Signaling (CAS) is in-band signaling usually implemented as robbed-bit signaling. CAS is supported for both T1 and E1 (including DS3) on the IMG.
Related Topics:
IMG 1010 - CAS Quick Configuration Guide
Interworking
ITU Q.699
Brief Description:
...
Fallback procedures are not supported in IMG, hence any interworking related to that is also not supported.
Supplementary services are not supported in the IMG
Related Topics:
IMG 1010 - Call Flows: SS7 ISUP to ISDN
SS7 ITU to SIP Interworking: Calling Party Category (CPC) (10.3.3 ER1)
...
user part
parameter of the From URI
Configuration:
IMG 1010 - SIP From: Header Tags (10.5.1_ER1 and above)
Related Topics:
IMG 1010 - Calling Party Category
SIP
SIP UPDATE
Overview:
The UPDATE method allows a UAC to update parameters of a session, such as the SDP and session timers.
...
SDP (for example, to set the media on hold during early media)
Session timers (for example, to adjust call duration in a prepaid application)
RFC:
Benefits:
Allows you to update parameters during a session when conditions change.
...
The SIP UPDATE method is to be accepted by the IMG without user intervention, and therefore cannot be disabled. There is no configuration involved.
Related Topics:
SIP Session Timer
RFC:
RFC 4028 Session Timers in the Session Initiation Protocol
...
The RFC 3261 does not define a keep alive mechanism for the sessions it establishes. The result is that an UA will not always be able to determine whether a session is still active. For instance, when a remote party fails to send a BYE message at the end of a session, or when the BYE message gets lost due to network problems, the UA will not know that session has ended, thus will not release resource allocated for the session. To resolve this problem, the IMG supports the keep alive mechanism for SIP sessions defined in RFC 4028 Session Timers in the Session Initiation Protocol (SIP).
Configuration:
IMG 1010 - SIP Session Timer Configuration
You configure the Session Timer in the SIP Session Timer pane. SIP Session Timer is enabled by default.
More Information:
IMG 1010 - SIP Session Timer Call Flows
SIP Busy Out
Brief Description:
...
Allows you to monitor the status of external SIP gateways.
Configuration:
IMG 1010 - SIP Profile - 10.5.3
Related Topic:
IMG 1010 - SIP Options Keep Alive Overview - Busy Out
SIP SUBSCRIBE/NOTIFY
Brief Description:
...
You can develop user-specific applications that reside on your network entity and have the ability to subscribe for event services supported by the IMG. If the network entity wants the ability to detect an entered DTMF digit from the TDM-side of a call to the IP side of a call, the entity can subscribe to the IMG for these events and receive SIP NOTIFY events containing the digit event.
Configuration:
Related Topic:
IMG 1010 - SIP INFO Method - SUBSCRIBE-NOTIFY
SIP PRACK
Brief Description:
...
In addition, SIP PRACK provides further opportunities for SDP offer/answer exchange mode because of its 3-way handshake design.
Configuration:
IMG 1010 - SIP Profile - 10.5.3
SIP Carrier Identification Code
...
This feature enables the IMG to receive and transmit the Carrier Identification Code (CIC) parameter between the SIP network and SS7. The CIC parameter is a three- or four- digit code used in routing tables to identify the network that serves the remote user when a call is routed over many different networks. The CIC parameter is carried in SIP INVITE requests and maps to the SS7 Request.
Related Topic:
IMG 1010 - CIC and DAI Codes - SS7 ISUP to SIP
ISUP-OLI (ANSI Only)
The ISUP OLI (also know as II digits) parameter includes information that is used for carriers to determine the origin of a call. This information gets lost over SIP networks if not inter-worked properly. This feature allows carrying ANSI ISUP OLI Parameter from traditional TDM network into SIP and vice versa. This information is passed in the From: header of the INVITE message.
Related Topic:
IMG 1010 - ISUP Originating Line Info Support - ANSI
ENUM
RFC:
RFC 3764 enumservice registration for Session Initiation Protocol (SIP) Addresses-of-Record
...
ENUM facilitates the interconnection of systems that rely on telephone numbers with those that use URIs to route transactions. E.164 is the ITU-T standard international numbering plan, under which all globally-reachable telephone numbers are organized.
Configuration:
Related Topic:
SIP-Based Load Balancing
Brief Description:
...
Improved scalability and fault tolerance.
Related Topics:
IMG 1010 - Configuring SIP-Based Load Balancing
IMG 1010 - SIP-Based Load Balancing - Virtual IP Address
SIP CODEC Negotiation Priority
...
The feature gives you the flexibility to choose CODEC priority on either IMG or the far end gateway.
Configuration:
IMG 1010 - SIP Profile - 10.5.3
You configure CODEC Negotiation Priority to either Local or Remote in the SIP Profile pane
...
RFC 3261 SIP: Session Initiation Protocol
Configuration:
You can change the default to a value between 10 and 7200 sec using the Registration Expiration Interval field in the External Gateway pane.
...
Enables re-direct to Proxy Server.
Related Topics:
IMG 1010 - Supported 3xx Redirect Responses
SIP Call Hold
Brief Description:
...
Related Topic:
ITX Message (SPIROU) Support (10.3.3 ER1)
IMG 1010 - SPIROU-ITX in SIP INFO
SIP 3PCC (Third Party Call Control) (10.3.3 ER1)
The IMG supports the establishment of a session by a third party "controller" such as an application server or a Session Border Controller (SBC), allowing the IMG to integrate with services like auto attendant, conferencing, and unified messaging.
See IMG 1010 - SIP 3PCC - Third Party Call Control.
Fully Qualified Domain Name Support (10.3.3 ER2)
...
You enter Fully Qualified Domain Names in the Fully Qualified Domain Name field of the IMG 1010 - SIP Signaling Object, IMG 1010 - SIP Virtual Address , and IMG 1010 - VoIP Resource panes.
You configure outgoing FQDN options in the Outgoing Fully Qualified Domain Name field of the IMG 1010 - SIP Profile - 10.5.3 .
RADIUS:
The radius dictionary file has been updated to support this feature. Customers using RADIUS should update the dictionary.cantata file they are using with the latest one located in the GCEMS install under ‘/opt/cantata/common/radius‘
...
# dictionary.Cantata
#
# IMG release 10.3.3 ER2+
# Version. $id: dictionary.cantata,v1.3 2007/06/29 $
Related Topic:
IMG 1010 - Fully Qualified Domain Name Support
Support for multiple SIP 183 prior to 200 OK (10.3.3 ER2)
...
Application Servers
Proxy Servers
See IMG 1010 - Multiple SIP 183s prior to 200 OK.
Re-INVITE if switching into Modem Bypass Mode (10.3.3 ER2)
...
This feature is disabled by default. You enable it with the Outbound Modem Triggers Re-INVITE field in the IMG 1010 - SIP Profile - 10.5.3.
SIP INFO DTMF Digit Relay (10.3.3 ER2)
...
You enable this feature by selecting INFO DTMF digit relay in the Method field of the IMG 1010 - SIP DTMF Support pane.
See IMG 1010 - SIP INFO Method - DTMF for more information.
H.323
...
By inserting the Time to Live value in the RRQ, the user has control over it as the gatekeeper normally returns the value requested by the endpoint in the RRQ. If the gatekeeper returns a different value, that will be the value used by the IMG in subsequent lightweight RRQs to maintain registration.
Configuration:
IMG 1010 - External Gatekeeper
SS7
Pre/Post 95 Support for GRS/GRA
...
Enables different CIC groups in an SS7 stack to connect to different types of DPCs.
Configuration:
Related Topic:
IMG 1010 - Pre-Post 95 Support for GRS-GRA
JT-ISUP
The IMG supports JT-ISUP, the SS7 standard for Japan (JT-Q.763).
See IMG 1010 - ISUP Group - JTISUP for more information.
Cross Connect (10.3.3 ER3)
This feature allows you to pass SS7 Links through the IMG by establishing a cross connection between two TDM channels. These Channels can be on any spans in the same IMG that do not have an ISDN channel configured on them. These channels will not appear in any channel group.
Configuration:
Sending TNS (Transit Network Selection) Parameter for ANSI (10.3.3 ER3)
You enable the passing of the TNS in the IMG 1010 - SS7 Parameter Filter pane. If TNS is set to Pass and there is a Carrier ID (either in the incoming IAM or configured in the IMG 1010 - Translation Entry ), both Carrier Identification and TNS will be included in the outgoing message.
The Type of Network, Network ID Plan and Circuit Code sent in the TNS can be configured using the IMG 1010 - Advanced Carrier Number Translation pane. If a Carrier ID is entered in the IMG 1010 - Translation Entry but Advanced Carrier parameters are not configured, the Type of Network is set to National Network, Circuit Code is set to 0, and Network ID Plan depends on the number of Carrier ID digits.
Configuration:
IMG 1010 - SS7 Parameter Filter
IMG 1010 - Advanced Carrier Number Translation
ISDN
Ability to assign Net5 Q.931 variant on T1 ISDN D-channels (10.3.3 ER2)
...
See the Supported Variants in the IMG 1010 - ISDN Features topic for a complete list of supported variants.
Configuration:
IMG 1010 - ISDN D Channel pane: Base Variant field
VoIP
...
Better voice quality than G.729A.
Configuration:
Related Topic:
IMG 1010 - Vocoder Information
G.723 Maximum Packet Size
...
Handle larger payloads for reduced bandwidth markets.
Related Topic:
IMG 1010 - Vocoder Information
Modifiable RTP Base Port Number
...
This feature makes it easier for users with fire walls to insert the IMG into your network, because the RTP port ranges can be configured to fit your guidelines as to what port ranges are left open and what are closed.
Configuration:
G.729 AnnexB Selection
Overview:
...
Note that the media attribute "Annexb=yes" is not sent by the IMG in a SIP SDP, as this value is implied when unspecified in the SDP.
Configuration:
Routing
Modify Cause Code for Re-Routing Purposes
...
This feature gives you more flexibility as to how to use the IMG 1010 under particular network conditions and configurations.
Configuration:
Use the Re-attempt Cause Code field to select up to 4 cause code values.
...
Properly handle ported numbers.
Configuration:
Related Topic:
IMG 1010 - Local Number Portability (LNP)
Routing on Originating IMG
...
You enable this feature by selecting an IMG in the Match IMG as Well field in the IMG 1010 - Route Entry pane.
Importing Route Tables using NFS
...
This features allows you to translate a Null originating number only. This allows you, for example, to append a prefix to the originating number if the originating number is empty.
Configuration:
Enhanced Channel Group Statistics (10.3.3 ER 3)
...
The IMG now supports up to 3 SNMP Managers.
Configuration:
RADIUS
RADIUS VSA Names
The word Cantata now appears at the beginning of all Cantata VSA names. See Cantata RADIUS VSAs.
...
You enable this feature in the IMG 1010 - RADIUS Client pane.
Note: Radius Prepaid Support Mode will be disabled if Radius Debug Mode is enabled. The two modes cannot be enabled at the same time.
...
There is no longer a Development Mode for the GCEMS. When you start GCEMS it is automatically started in Production Mode.
Related Topic:
IMG 1010 - Starting GateControl EMS
Setting Local Time
This feature allows you to set the local time zone on a per IMG basis. All IMG functions that use time will use the local time.
...
setup time
connect time
disconnect time
See IMG 1010 - Setting Local Time for more information.
ClientView
...