Matrix PRASAR UCS System Manual 367
Since it is not possible to call back a SIP ID, Fixed Number offers you a solution, using which you can
send a trunk line number as CLI on the SIP Trunk. Using this CLI, the called party can call back the
calling party.
If you select this option, you must configure the Fixed Number. The Fixed Number may consist of a
maximum of 40 characters. Valid characters are from 0-9 and plus (+).
By default, SIP ID is set as the Send CLI in FROM field for all SIP Trunks.
• When extension number of the calling extension is blank, and the ‘Send CLI in FROM field’ configured
for the SIP Trunk is other than "SIP ID", then also SIP ID will be sent as CLI.
• When Emergency numbers are dialed using the SIP Trunk and even if CLIR is set as the ‘Send CLI in
FROM field’ option, the system will send the number of the caller as CLI.
• Send Called Party Number In: PRASAR UCS provides you the option to Send Called Party Number in
“To” or “Request URI” field. You may select — “To, Request URI”, “To”, “Request URI”. Default: To,
Request URI.
• If you select To, then the called party number will be sent in “To” field, whereas SIP ID configured on
the trunk will be sent in the “Request URI” field.
• If you select Request URI, then the called party number will be sent in the “Request URI” field, while
SIP ID configured on the trunk will be sent in the “To” field.
• If you select To, Request URI, then the called party number will be sent in both the fields.
If the SIP ID is not configured and you select the option — To or Request URI, then the called party
number will be sent in both the fields.
If the called party number is not available in any of the above cases then the remote server address will
be sent in the selected field.
• Add P-Asserted-Identity/P-Preferred-Identity: Select Add P-Asserted-Identity/P-Preferred-Identity
check box, if supported by your Service Provider.
• Identity: Select P-Preferred-Identity or P-Asserted-Identity as Identity.
• Caller ID: Select the desired Caller ID option:
• SIP ID: If you want the SIP ID configured on the SIP Trunk to be displayed as the Caller ID.
• Calling Party Wise: If you want the Calling Extension Number (the number of the extension making
the outgoing call through the SIP trunk) to be displayed as the Caller ID.
• Fixed Number: If you want a specific number to be sent as the Caller ID. When you select this option,
you must also define the number to be sent as the Caller ID.
• Fixed Number: If you select Fixed Number as the Caller ID option, you must configure the desired number
in Fixed Number. The Fixed Number may consist of a maximum of 40 characters. Valid characters are
from 0-9 and plus (+)
• Default Transport for Outgoing Message: Configure this parameter for Proxy SIP Trunks only. The
PRASAR UCS supports three options for transporting outgoing SIP messages:
• UDP: Outgoing messages are transported using UDP. By default this option is selected.
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