This file is indexed.

/etc/asterisk/osp.conf is in asterisk-config 1:11.7.0~dfsg-1ubuntu1.

This file is owned by root:root, with mode 0o640.

The actual contents of the file can be viewed below.

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;
; Open Settlement Protocol Sample Configuration File
;
; This file contains configuration of OSP server providers that are used by the
; Asterisk OSP module.  The section "general" is reserved for global options.
; All other sections describe specific OSP Providers.  The provider "default"
; is used when no provider is otherwise specified.
;
; The "servicepoint" and "source" parameters must be configured.  For most
; implementations the other parameters in this file can be left unchanged.
;
[general]
;
; Enable cryptographic acceleration hardware.
; The default value is no.
;
;accelerate=no
;
; Enable security features.
; If security features are disabled, Asterisk cannot validate signed tokens and
; all certificate file name parameters are ignored.
; The default value is no.
;
;securityfeatures=no
;
; Defines the status of tokens that Asterisk will validate.
; 0 - signed tokens only
; 1 - unsigned tokens only
; 2 - both signed and unsigned
; The default value is 0, i.e. the Asterisk will only validate signed tokens.
; If securityfeatures are disabled, Asterisk cannot validate signed tokens.
;
;tokenformat=0
;
;[default]
;
; List all service points (OSP servers) for this provider.
; Use either domain name or IP address.  Most OSP servers use port 5045.
;
;servicepoint=http://osptestserver.transnexus.com:5045/osp
;
; Define the "source" device for requesting OSP authorization.
; This value is usually the domain name or IP address of the the Asterisk server.
;
;source=domain name or [IP address in brackets]
;
; Define path and file name of crypto files.
; The default path for crypto file is /var/lib/asterisk/keys.  If no path is
; defined, crypto files will in /var/lib/asterisk/keys directory.
;
; Specify the private key file name.
; If this parameter is unspecified or not present, the default name will be the
; osp.conf section name followed by "-privatekey.pem" (for example:
; default-privatekey.pem)
; If securityfeatures are disabled, this parameter is ignored.
;
;privatekey=pkey.pem
;
; Specify the local certificate file.
; If this parameter is unspecified or not present, the default name will be the
; osp.conf section name followed by "- localcert.pem " (for example:
; default-localcert.pem)
; If securityfeatures are disabled, this parameter is ignored.
;
;localcert=localcert.pem
;
; Specify one or more Certificate Authority key file names.  If none are listed,
; a single Certificate Authority key file name is added with the default name of
; the osp.conf section name followed by "-cacert_0.pem " (for example:
; default-cacert_0.pem)
; If securityfeatures are disabled, this parameter is ignored.
;
;cacert=cacert_0.pem
;
; Configure parameters for OSP communication between Asterisk OSP client and OSP
; servers.
;
; maxconnections: Max number of simultaneous connections to the provider OSP
;                 server (default=20)
; retrydelay:     Extra delay between retries (default=0)
; retrylimit:     Max number of retries before giving up (default=2)
; timeout:        Timeout for response in milliseconds (default=500)
;
;maxconnections=20
;retrydelay=0
;retrylimit=2
;timeout=500
;
; Set the authentication policy.
; 0 - NO        - Accept all calls.
; 1 - YES       - Accept calls with valid token or no token. Block calls with
;                 invalid token.
; 2 - EXCLUSIVE - Accept calls with valid token. Block calls with invalid token
;                 or no token.
; Default is 1,
; If securityfeatures are disabled, Asterisk cannot validate signed tokens.
;
;authpolicy=1
;
; Set the default destination protocol. The OSP module supports SIP, H323, and
; IAX protocols.  The default protocol is set to SIP.
;
;defaultprotocol=SIP
;
; Set the work mode.
; 0 - Direct
; 1 - Indirect
; Default is 0,
;
;workmode=0
;
; Set the service type.
; 0 - Normal voice service
; 1 - Ported number query service
; Default is 0,
;
;servicetype=0