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<proxy_uri>       Optional URI of the proxies to be visited for all 
outgoing requests that are using this account 
(REGISTER, INVITE, etc).
<proxy_uri2>      Optional URI of the proxies (for redundancy) to be 
visited for all outgoing requests that are using this 
account.
<reg_timeout>     1800  Optional interval for registration, in seconds. If the 
value is zero, default interval will be used.
<cred>        Array of credentials. Normally, if registration 
is required, at least one credential should be 
specied to successfully authenticate the service 
provider. More credentials can be specied, for 
example when it is expected that requests will be 
challenged by the proxies in the route set.
  <realm>     *  Realm. Use ”*” to make a credential that can be 
used to authenticate any challenges.
  <scheme>      Scheme (e.g. ”digest”).
  <username>     Authentication name
  <cred_data_type>  0  Type of data (0 for plaintext password).
  <cred_data>     The data, which can be a plaintext password or a 
hashed digest.
<auto_update_nat>   true  This option is useful for keeping the UDP 
transport address up to date with the NAT public 
mapped address. When this option is enabled 
and STUN is congured, the library will keep 
track of the public IP address from the response 
of REGISTER request. Once it detects that the 
address has changed, it will unregister current 
Contact, update the UDP transport address and 
register a new Contact to the registrar.
<ka_interval>     15  Set the interval for periodic keep-alive transmis-
sion for this account. If this value is zero, 
keep-alive will be disabled for this account. 
The keep-alive transmission will be sent to the 
registrar’s address after successful registration.
<ka_data>       Specify the data to be transmitted as keep-alive 
packets. Default: CR-LF.
<use_srtp>     0  Specify whether secure media transport should be 
used for this account. 
0: SRTP will be disabled and the transport will 
reject RTP/SAVP offer. 
1: SRTP will be advertised as optional and incom-
ing SRTP offer will be accepted. 
2: The transport will require that RTP/SAVP media 
is used.
<srtp_secure_signaling>  1  Specify whether SRTP requires secure signalling. 
This option is only used when use_srtp option 
above is non-zero. 
0: SRTP does not require secure signalling 
1: SRTP requires secure transport such as TLS 
2: SRTP requires secure end-to-end transport 
(SIPS)
MANAGEMENT – UPGRADE AND CONFIGURATION