CSCF Serving-CSCF Configuration Mode Commands


CSCF Serving-CSCF Configuration Mode Commands
 
 
The Serving-CSCF Configuration Mode is used to set various commands supporting the role of the CSCF service as a Serving CSCF.
 
Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
 
3gpp
Enables/disables functionality related to 3GPP Release 8 support. This command is disabled by default.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
[ default | no ] 3gpp Rel8
default | no
Disables 3GPP Release 8 support.
Usage
Use this command to configure the S-CSCF to support 3GPP Release 8 functionality.
 
alias-indication
Enables/disables alias indication functionality, a collaborative information exchange between the S-CSCF and HSS. This command is disabled by default.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
[ default | no ] alias-indication
default | no
Disables alias indication functionality between the S-CSCF and HSS.
Usage
Use this command to display alias information from the HSS.
If both the HSS and the S-CSCF support this feature, Alias Group IDs will be displayed in the output of the show subscribers cscf-only full command.
Important: 3GPP Release 8 support must be enabled.
 
allow
Enables the function to allow IMS interworking with RFC3261 SIP User Agents.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
[ no ] allow rfc3261-ua-interworking
no
Disables the interworking capability.
Usage
Use this command to enable the S-CSCF to allow IMS interworking with RFC3261 SIP User Agents.
 
authentication
Configures the authentication method used by the S-CSCF service.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
authentication { aka-v1 value | allow-noauth [ invite | re-register| register ] | allow-noipauth [ invite | re-register| register ] | allow-unsecure | aor-auth | md5 value }
no authentication { aka-v1 | allow-noauth [ invite | re-register| register ] | allow-noipauth [ invite | re-register| register ] | allow-unsecure | aor-auth | md5 }
aka-v1 value
Specifies that AKA-v1 algorithm is used as the authentication type when accessing the CSCF service. value specifies a preference - the lower the value, the higher the preference. value must be an integer from 1 to 1000.
Important: In order to change a priority level, you must remove the original value and configure a new one.
allow-noauth [ invite | re-register| register ]
Specifies that access to the S-CSCF service is allowed if authentication fails.
invite: Specifies that access to the S-CSCF service is allowed if authentication fails on INVITE requests only.
re-register: Specifies that access to the S-CSCF service is allowed if authentication fails on RE-REGISTER requests when the request is integrity-protected only.
registration: Specifies that access to the S-CSCF service is allowed if authentication fails on REGISTER requests only.
allow-noipauth [ invite | re-register| register ]
Specifies that access to the S-CSCF service is allowed if early IMS-based IP authentication fails.
invite: Specifies that access to the S-CSCF service is allowed if early IMS-based IP authentication fails on INVITE requests only.
re-register: Specifies that access to the S-CSCF service is allowed if authentication fails on RE-REGISTER requests when the request is integrity-protected only.
registration: Specifies that access to the S-CSCF service is allowed if early IMS-based IP authentication fails on REGISTER requests only.
allow-unsecure
Specifies that un-secure access is allowed to the S-CSCF service.
aor-auth
Specifies that authentication is based on the AoR when accessing the S-CSCF service.
md5 value
Specifies that the MD5 algorithm is used as the authentication type for accessing the S-CSCF service. value specifies a preference - the lower the value, the higher the preference. value must be an integer from 1 to 1000.
Important: In order to change a priority level, you must remove the original value and configure a new one.
no authentication { aka-v1 | allow-noauth [ invite | re-register| register ] | allow-noipauth [ invite | re-register| register ] | allow-unsecure | aor-auth | md5 }
Disables the specified authentication method for the S-CSCF service.
Usage
Use this command to configure the authentication method used by the S-CSCF service.
Important: The S-CSCF supports multiple authorization schemes, but this requires disabling all authorization configured in the S-CSCF service so that it will send “Unknown” in the Sip-Authorization-Scheme AVP. This allows the HSS to dictate authorization. The following commands disable all authorization configured in the S-CSCF service to allow HSS to control authorization:
authentication allow-noipauth
allow rfc3261-ua-interworking
no authentication aka-v1
no authentication md5
Example
The following command configures the authentication method used by the S-CSCF service to MD5 with a preference of 3:
authentication md5 3
 
diversion-info
Enabling this command prompts the service to add a diversion header (draft-levy-sip-diversion-08) when the call is diverted to a different endpoint due to a call feature. By default, diversion-info is disabled.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
[ default | no ] diversion-info
default | no
The service will not add a diversion header.
Usage
Use this command to enable the service to add a diversion header to call setup packets when calls are diverted due to the application of call features.
 
end
Exits the current mode and returns to the Exec Mode.
Product
All
Privilege
Administrator
Syntax
end
Usage
Change the mode back to the Exec mode.
 
exit
Exits the current mode and returns to the previous mode.
Product
All
Privilege
Administrator
Syntax
exit
Usage
Return to the previous mode.
 
ims-restoration
Enables/disables IMS restoration procedures. This feature is disabled by default.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
[ default | no ] ims-restoration
default | no
Disables IMS restoration procedures on the S-CSCF service.
Usage
Use this command to enable IMS REGISTER and INVITE restoration procedures defined in 3GPP TS 23.820.
 
interrogating-cscf-role
Enables the function to also perform as an Interrogating-CSCF.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
[ no ] interrogating-cscf-role
no
Disables the Interrogating-CSCF role in this function.
Usage
Use this command to enable the S-CSCF to also perform as an Interrogating-CSCF.
 
local-call-features
Enables/disables local call features. This command is disabled by default.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
[ default | no ] local-call-features
default | no
Disables local call features for this S-CSCF.
Usage
Use this command to enable local call features.
 
network-id
Configures the Network Identifier.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
network-id id
[ no ] network-id
id
The Network Identifier of the entity.
id must be from 1 to 79 alpha and/or numeric characters in length.
no network-id
Removes the configured Network Identifier of the entity.
Usage
The Network Identifier is used to compare with the P-Visited-Network-ID header received from P-CSCF to decide home or roaming subscriber at S-CSCF service.
Example
Sets the Network Identifier to pcscf01.company.com:
network-id pcscf01.company.com
 
policy
Configures the policy for Served User Routing in this S-CSCF service.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
[ default | no ] policy allow p-served-user-routing
allow p-served-user-routing
Enables Served User Routing functionality for this S-CSCF.
default | no
Disables Served User Routing functionality for this S-CSCF.
Usage
Use this command to enable/disable the policy for Served User Routing.
Example
The following command enables Served User Routing on this service:
policy allow p-served-user-routing
The following command disables Served User Routing on this service:
no policy allow p-served-user-routing
 
registration
Configures a registration lifetime for all subscribers to the service.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
registration lifetime { default sec | max sec | min sec }
default registration lifetime
{ max sec | min sec | default sec }
max sec: Specifies the maximum amount of time that a registration can exist on the system. sec must be an integer from 60 to 2147483646. Default is 86400. max sec must be > or = to min sec.
min sec: Specifies the minimum amount of time that a registration can exist on the system. sec must be an integer from 60 to max sec -1. Default is 60. min sec must be < or = to max sec.
default sec: Specifies the default amount of time that a registration can exist on the system. sec must be an integer from 60 to max sec -1. Default is 3761. default sec must be < or = to max sec and > or = to min sec.
default registration lifetime
Returns the command to the default settings.
Usage
Use this command to control the amount of time registrations are allowed to exist on this service.
The system responds to registrations in the following manner:
Using default values:
Example
The following command configures the maximum registration lifetime to 43200 (12 hours):
registration lifetime max 43200
 
reliable-prov-resp
Enables/disables the reliability of provisional responses feature.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
reliable-prov-resp { mandatory | optional }
no reliable-prov-resp
mandatory | optional
mandatory: Both inbound and outbound will request reliability.
optional (default): Reliability is imposed by inbound side. Only if inbound call requests reliability will outbound also request reliability.
no
Disables the reliability of provisional responses feature.
Usage
Use this command to enable/disable the reliability of provisional responses feature.
Example
The following command sets the reliability of provisional responses feature to mandatory:
reliable-prov-resp mandatory
 
sifc
Enables Shared Initial Filter Criteria (SiFC) functionality. This command is disabled by default.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
[ default | no ] sifc
default | no
Disables shared iFC functionality for this S-CSCF.
Usage
Use this command to configure the S-CSCF to share iFC functionality.
If both the HSS and the S-CSCF support this feature, subsets of iFC may be shared by several service profiles. The HSS downloads the unique identifiers of the shared iFC sets to the S-CSCF. The S-CSCF uses a locally administered database to map the downloaded identifiers onto the shared iFC sets.
If the S-CSCF does not support this feature, the HSS will not download identifiers of shared iFC sets.
 
sip-header
Enable SIP P-User-Database (PUD) header insertion for the S-CSCF service.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
[ no ] sip-header insert p-user-database
p-user-database
Inserts PUD header in SIP (REGISTER) message and Invite from I-CSCF to S-CSCF.
no
Disables SIP PUD header insertion for the S-CSCF service.
Usage
Enabling this command allows PUD header insertion in SIP (REGISTER) message and Invite from I-CSCF to S-CSCF.
 
sip-request
Configures SIP Request-related configuration in this S-CSCF service.
Product
SCM (S-CSCF, SIP Proxy)
Privilege
Administrator
Syntax
sip-request re-route { max-attempts attempts | response-code code }
default sip-request re-route max-attempts
no sip-request re-route response-code code
re-route
Specify SIP Request re-route related configuration.
max-attempts attempts
Specifies the maximum number of re-route attempts that a S-CSCF should allow for a given call before passing the negative response upstream.
attempts must be an integer from 1 to 10.
Default: 2
response-code code
Specifies the list of Response codes that will be considered as re-routable responses to a call attempt.
code must be a three-digit integer from 400 to 699.
Important: You may configure a maximum of five response code values per S-CSCF service.
default sip-request re-route max-attempts
Specifies a maximum number of two re-route attempts that a S-CSCF should allow for a given call before passing the negative response upstream.
no sip-request re-route response-code code
Disables the specified Response code.
Usage
Use this command to configure:
Example
The following command configures the maximum number of re-route attempts to 5:
sip-request re-route max-attempts 5
 
tas
Configures the S-CSCF to perform Telephony Application Server (TAS) functions.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
[ default | no ] tas
default | no
Disables the TAS feature for this S-CSCF.
Usage
Use this command to configure the S-CSCF to perform TAS functions.
 
tas-service
Identifies the name of the service configured on the system performing Telephony Application Server (TAS) functions.
Product
SCM (S-CSCF)
Privilege
Administrator
Syntax
tas-service name
no tas-service
name
Specifies the name of the service configured on the system performing TAS functions. name must be from 1 to 63 alpha and/or numeric characters and be an existing service.
no
Removes the TAS name from the S-CSCF configuration.
Usage
Use this command to identify the name of the service configured on the system performing TAS functions
Example
The following command identifies the TAS service name as scscf3:
tas-service scscf3
 
 

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