ATCOM AT840 series, User Manual

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� Register Expires: register expire time, default is 60 seconds. AT840 will auto
configure this expire time to the server recommended setting if it is different from
the SIP server.
� Transport Type: UDP/TCP/TLS.
� SIP 100Rel Require : If enable, phone need the other side to respond PRACK to
reliable transmission of provisional responses (18x).
� � � � Codec Codec Codec Codec Configuration Configuration Configuration Configuration
� Prefer Codec: Select a preferred codec for all calls. (G711u/G711a/G729/
G722/G723/G726-16/G726-24/G726-32/G726-40/Lin16-16)
However, the actual codec used in a call still depends on the outcome of the codec
negotiation protocol.
� User Prefer Codec Only: Only use the preferred codec for all calls. The call will fail
if the far end does not support this codec.
� DTMF Tx Method: select the method to transmit DTMF signals to the far end:
Inband, rfc2833, INFO. Defaults to RFC2833.
� � � � Call Call Call Call Feature Feature Feature Feature Setting Setting Setting Setting
� Message Waiting: whether to prompt if there is a voicemail.
� Voice Mail Number: if you set voicemail number, then you can just press the
voicemail key to auto dial voicemail number then enter voicemail box.
� Pickup Service Code: set Pickup Service Code according to the service settings.
� UDP Keep Alive Enable: Enabel UDP keep alive, to detect if the server is still
available.
� UDP Keep Alive Intvl: Set expire time of the keep alive UDP.
� Default Ring: which ring to select for this account.
� SRTP: Secure Real Time Control Protocol.
VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299