BreezeMAX Si 2000 CPE User Manual - Alvarion

Chapter 7 - VoIP Settings
SIP Setting
• DTMF – Enables the sending of dual-tone multi-frequency (touch tone) phone
signals over the VoIP connection. There are several methods to choose from:
» No DTMF: The DTMF signals are not sent over the VoIP connection.
» In-band Mode: The DTMF signals are sent over the RTP voice stream. In
the case when low-bandwidth codecs are used, the DTMF signals may be
distorted.
» 2833 Relay: Uses the RFC 2833 method to relay the DTMF signals over
the RTP voice stream without any distortion. (This is the default.)
» Both In-band and 2833: Uses the best method depending on the called
party.
• Invite Timeout – The time that the unit waits for a response to a SIP Invite
message before a call fails. If network connections are slow and many SIP calls
fail, you may need to increase this timeout value. (Range: 1-32 seconds;
Default: 12 seconds)
• T.38 Option – Selects the method to use when sending fax messages over the
VoIP network from a fax machine connected to one of the RJ-11 Phone ports
on the BreezeMAX Si 2000. (Default: Voice and T.38 Fax Relay)
» T.38 Fax Relay: The SIP protocol sets up the VoIP call, then the T.38 Fax
Relay protocol sends the fax data over the network.
» Voice and T.38 Fax Relay: Enables voice calls and faxes to be sent from
the Phone port connection. When a fax tone signal is detected on the port,
the T.38 Fax Relay standard is used instead of the voice codec.
» Voice and Fax Pass Through: Enables voice calls and faxes to be sent
from the Phone port connection. For this option, fax signals are sent over
the VoIP network using the voice codec, just as if it were a voice call.
BreezeMAX Si 2000 CPE 90 User Manual