mgcpncsG729AnnexBNegotiation

MX-MGCPNCS-EXPERIMENTAL-MIB · .1.3.6.1.4.1.4935.99.100.1.5.15

Object

scalar r/w MX-TCMxEnableState

Indicates if the G.729 Annex B is negotiated through
the session description protocol.
          
RFC 3555 (MIME Type Registration of RTP Payload
Formats), July 2003 explains how the Annex B can be
negotiated by using the session description protocol.
          
The Annex B indicates that Annex B, voice activity
detection, is used or preferred. Permissible values
are 'yes' and 'no' (without the quotes); 'yes' is
implied if this parameter is omitted.
          
m=audio 5004 RTP/AVP 0 18 13
a=fmtp:18 annexb=yes
          
disable:
   The G.729 Annex B is NOT negotiated through the
   session description protocol.
          
   In that case, the G.729 Annex B is based on the
   MIB variable voiceIfG729VoiceActivityDetectionEnable.
   When this variable is set to 'enable', the G.729
   codec negotiated as payload number 18 (G729)
   supports the Annex B implicitly.
          
   However, when the voiceIfG729VoiceActivityDetectionEnable
   variable is set to 'disable', the G.729 codec
   negotiated as payload number 18 (G729) does NOT
   support the Annex B implicitly.
          
enable:
   The G.729 Annex B is negotiated through the
   session description protocol.
          
   In that case, the G.729 Annex B is advertised in
   the offer. The value depends on the MIB variable
   voiceIfG729VoiceActivityDetectionEnable. If this
   variable is set to 'enable', then the Annex B is
   set to 'yes'; otherwise, the value 'no' is
   advertised.
          
   The answerer MAY not be able to support the Annex B.
   In that case, the answer to the Annex B can be set
   to 'no'.  This forces the offerer not to use the
   Annex B in G.729.  However, the opposite is not
   possible.  The answerer can NOT force the offerer to
   use the Annex B if this one does not bear such
   capability.

Context

MIB: MX-MGCPNCS-EXPERIMENTAL-MIB
OID: .1.3.6.1.4.1.4935.99.100.1.5.15
Type: scalar
Access: readwrite
Status: current
Parent: mgcpncsInterop
Siblings: 13

Syntax

MX-TCMxEnableState

Source: MX-TCMxEnableState
Base type: Enumeration

Values & Constraints

Type Values

`0`	disable
`1`	enable

Related Objects

Sibling Objects

Object	Type	Syntax	OID
mgcpncsOriginLineSessionIDAndVersionMaxLength The maximum length of the session ID and the session version number in the origin line (o=) of the SDP. none: The session ID and the session version number are re…	scalar	Enumeration	`.1.3.6.1.4.1.4935.99.100.1.5.10`
mgcpncsMultipleFaxToneDetection Controls whether the unit reports more than one occurrence of the fax tone during the negotiation phase. This when event notification requests can be received after the fax tone.…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.100`
mgcpncsConnectRtpSockets Determines whether the endpoints will listen to RTP sources other than the one to which they are sending packets. disable : use unconnected sockets. Endpoints will pla…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.150`
mgcpncsValidateOfferAnswerModel Determines whether the unit requires strict adherence to RFC 3264 from the peer when negotiating capabilities for the establishment of a media session. When enabled, th…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.20`
mgcpncsRtpUdpChecksumEnable Enables/disables the UDP checksum for RTP packets. UDP checksum is disabled by default to gain performance. Enable: UDP checksum will be calculated for each RTP …	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.200`
mgcpncsT38CapabilitiesUsingAudioCodec98 Enables or disables parsing of remote SDP in order to extract remote T.38 capabilities from an audio stream. This variable is useful when a call-agent is re-using the a…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.250`
mgcpncsImmediateModemToneReporting Controls whether the early detection of a modem tone by the the unit is immediately reported to the call agent (when requested) or delayed until the exact nature of the transmissi…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.300`
mgcpncsMakeOsiSignalBrief For legacy reasons, this variable makes it possible to change the behaviour of the Network Disconnect signal (L/osi) by changing its type from time-out to brief (see RFC 3435 for …	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.350`
mgcpncsFakeRfc3407Recognition Allows recognition of a remote endpoint's T.38 capabilities when they are advertised using the notation recommended in RFC 3407. More precisely, when enabled, the unit will recog…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.400`
mgcpncsUseItuT38Format Determines the format used, in the SDP portion of packets, to advertise the unit's T.38 capabilities. disable : Support for the boolean T.38 parameters T38FaxFillBit…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.450`
mgcpncsAnswerStreamFormat The answer to an offered session description is based on the offered session description. RFC 3264 stipulates that to reject an offered stream, the port number in the c…	scalar	Enumeration	`.1.3.6.1.4.1.4935.99.100.1.5.5`
mgcpncsBracketsAroundIpAddressInDomainNameEnable Defines when brackets are added around the endpoint's domain name only when the configured domain name is an IP address. disable : Brackets are not added around the …	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.500`
mgcpncsPolarityReversalOnCallingCardServiceToneEnable Defines if a polarity reversal must be performed before playing the calling card service tone when receiving the S:L/z signal request. disable : Calling card service…	scalar	MX-TCMxEnableState	`.1.3.6.1.4.1.4935.99.100.1.5.550`