ATCOM AT-640 User Manual page 32

AT-640 User Manual
the request packet. It will decrease the server's repeat authorization work, if it
is enable.
� Auto Detect Server: Enable/Disable keeps NAT of SIP alive. If some server
refuse to register with too short interval time, and has no packets sending to
device in private network to keep NAT alive, user could set this function ON. It
need set the keep alive interval time less than the NAT server's.
� Enable Via rport: Enable/Disable system to support RFC3581. Via rport is
special way to realize SIP NAT.
� Enable PRACK: Enable or disable SIP PRACK function, suggest use the default
config.
� Long Contact: Set more parameters in contact field.
� Click to Talk: Set click to Talk (need practical software support).
� Ban Anonymous Call: Set to ban Anonymous Call.
� Dial Without Register: Set call out by proxy without registration.
� Enable Strict Proxy: Support the special SIP server-when phone receives the
packets sent from server， phone will use the source IP address, not the address
in via field.
� Enable Conference Num: conference ID.
� Forward Type: Select call forward mode, the default is Off .
� Off：Close down calling forward.
� Busy：If the phone is busy, incoming calls will be forwarded to the appointed
phone.
No answer ： If there is no answer, incoming calls will be forwarded to the
�
appointed phone.
� Always：Incoming calls will be forwarded to the appoint phone directly.
The phone will prompt the incoming while doing forward.
� Forward Phone Number: Appoint your forward phone number.
� Server Type: Select the special type of server which is encrypted, or has some
unique requirements or call flows.
� DTMF Mode: Select DTMF sending mode, there are three modes:
� DTMF_RELAY
� DTMF_RFC2833
� DTMF_SIP_INFO
Different VoIP Service providers may provide different modes.
� RFC Protocol Edition: Select SIP protocol version to adapt for the SIP server
which uses the same version as you select. For example, if the server is
CISCO5300, you need to change to RFC2543; else phone may not cancel call
normally. System uses RFC3261 as default.
� Transport Protocol: Set transport protocols, TCP or UDP.
� Subscribe Expire Time: Overtime of resending subscribe packet. Suggest using
the default config.
� Conference Number: config certain Conference call number.
� Signal Encode: enable signal encryption.
Rtp Encode: enable voice data encryption.
�
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