Specifications

Matrix SETU ATA211 System Manual 35
• In the Dialed Number column, enter the numbers that need to be modified when dialed out from this
SIP trunk.
• In the Substitute Number column, enter the numbers which the system should dial out in place of the
dialed numbers.
Make sure you enter a Dialed Number and its corresponding Substitute Number at the same Index
number in the table. For example, if you entered 001 as Dialed Number at Index 01, you must enter its
corresponding Substitute Number 1 also at Index 01.
• Click Submit to save your entries.
• Close the window.
3. By default, the CLI of the SIP Trunk is sent to the called party when outgoing calls are made using the SIP
trunk. If you do not want to send CLI, enable the CLIR check box. Default: Disabled.
4. If you want the system to reject incoming calls which do not have the identity of the caller (Calling Party
Information), enable the Anonymous Call Rejection check box. Default: Disabled
5. If you want the system to send RTP packets to original IP and Port from where RTP packets are received,
by ignoring the contact information received in SDP, enable the Symmetric RTP check box. Default:
Disabled
6. If you want the system to send DNS SRV query to the configured domain server, enable DNS SRV. When
disabled, the system will send DNS A query to the configured domain server. Default: Disabled.
7. When the system is installed behind a NAT Router, select specific NAT traversal mechanism to be used as
NAT Type. Default: Disabled.
• Select Router’s IP Address, if your ATA is located behind the NAT router (any type).
Make sure you disable Outbound Proxy on SIP trunk and configure the same IP Address under NAT
settings in the “System Parameters” page.
• Select STUN if your ATA is located behind the NAT router other than Symmetric.
Make sure you disable Outbound Proxy on SIP trunk and configure the STUN Server Address and port
in “System Parameters”.
8. Select the appropriate DTMF sending/receiving mechanism that is compatible with the DTMF sending/
receiving mechanism of your ITSP or remote peer. SETU ATA211 supports:
• Inband
• Outband
• SIP (INFO)
Default: Outband
• In the On Time field, set the time for which the DTMF digit should remain on, when the digit is dialed
out by the system. The DTMF On Time may be 100 or 150 or 200 milliseconds. Default: 100
milliseconds.
• In the Off Time field, set the time for which system should wait before dialing the successive DTMF
digits. The DTMF Off Time may be 100 or 150 or 200 milliseconds. Default: 100 milliseconds.