AudioCodes Mediant 500L MSBR - Page 858

User's Manual 858 Document #: LTRT-10466
Mediant 500L MSBR
Parameter Description
of available proxies, by using the Keep-Alive mechanism. The device
checks the availability of proxies by sending SIP OPTIONS every
keep-alive timeout to all proxies.
If the device receives a SIP 503 response to an INVITE, it also
marks that the proxy is out of service for the defined "Retry-After"
period.
Web/EMS: Enable P-
Associated-URI Header
CLI: p-associated-uri-hdr
[EnablePAssociatedURIHea
der]
Determines the device usage of the P-Associated-URI header. This
header can be received in 200 OK responses to REGISTER
requests. When enabled, the first URI in the P-Associated-URI
header is used in subsequent requests as the From/P-Asserted-
Identity headers value.
 [0] Disable (default)
 [1] Enable
Note: P-Associated-URIs in registration responses is handled only if
the device is registered per endpoint (using the User Information
file).
Web/EMS: Source Number
Preference
CLI: src-nb-preference
[SourceNumberPreference]
Determines from which SIP header the source (calling) number is
obtained in incoming INVITE messages.
 If not configured or if any string other than "From" or "Pai2" is
configured, the calling number is obtained from a specific header
using the following logic:
a. P-Preferred-Identity header.
b. If the above header is not present, then the first P-Asserted-
Identity header is used.
c. If the above header is not present, then the Remote-Party-ID
header is used.
d. If the above header is not present, then the From header is
used.
 "From" = The calling number is obtained from the From header.
 "Pai2" = The calling number is obtained using the following logic:
a. If a P-Preferred-Identity header is present, the number is
obtained from it.
b. If no P-Preferred-Identity header is present and two P-
Asserted-Identity headers are present, the number is
obtained from the second P-Asserted-Identity header.
c. If only one P-Asserted-Identity header is present, the calling
number is obtained from it.
Notes:
 The "From" and "Pai2" values are not case-sensitive.
 Once a URL is selected, all the calling party parameters are set
from this header. If P-Asserted-Identity is selected and the
Privacy header is set to 'id', the calling number is assumed
restricted.
CLI: src-hdr-4-called-nb
[SelectSourceHeaderForCalle
dNumber]
Determines the SIP header used for obtaining the called number
(destination) for IP-to-Tel calls.
 [0] Request-URI header = (Default) Obtains the destination
number from the user part of the Request-URI.

[1] To header = Obtains the destination number from the user part
of the To header.
 [2] P-Called-Party-ID header = Obtains the destination number
from the P-Called-Party-ID header.
Web/EMS: Enable Reason Enables the usage of the SIP Reason header.