System Provisioning - Packet Service Profile

Name

The packet service profile entry ID used to identify a particular packet service profile entry.

Silence Factor

The silence factor is the percentage of call time for which silence is expected. It is used to reduce expected call bandwidth.

The default value is 40.

Type of Service

Specifies the type of service (TOS) parameter to be provided in the IP header for voice packets. It is the decimal number that is included as is in the 8-bit TOS field of the IP header. Note that this number should be four times the DSCP value that you want to set in the high order 6 bits of the 8-bit TOS field.

The default value is 0.

Voice Initial Playout Buffer Delay

Specifies a numeric value, in milliseconds (ms), for the voice initial playout buffer delay required to absorb the maximum expected packet jitter across the network, in the range of 1 ms to 50 ms in increments of 1 ms.

The default value is 10 ms.

Peer Absence Action

Specifies the action to be taken when loss of bearer plane connectivity is detected on the channel. Possible actions are:

• None—No action taken.
• Trap—Generate an SNMP trap.
• Trap and Disconnect—Generate an SNMP trap and disconnect the call.

Requires the RTCP check box to be selected, which enables RTCP on the channel. The default setting is None.

AaL1 Payload Size

Specifies the ATM Adaption Layer Type 1 (AAL-1) payload size. For G.711, the possible values are 40, 44, or 47 bytes.
The default value is 47 bytes.

Preferred RTP Payload Type for DTMF Relay

Specifies the preferred RTP payload type in the RTP header of audio packets for this encoding. (default = 128). This parameter is only used for 8 kHz clock rate. DTMF payload type of each subsequent clock rate (16 kHz, 24 kHz, etc.) is incremented by 1.

Media Packet COS

Applies a Class of Service (COS) marking to be set in the User Priority field of the Ethernet VLAN tag header on media packets transmitted on a call leg that uses this packet service profile. Has an effect only if the network interface supports 802.1Q tagged Ethernet frames. The default value zero corresponds to best effort. The value range is 0-7.

Honor Remote Precedence

Specifies whether the audio encoding priority order of the local packet service profile takes precedence over the remote peer's audio encoding priority order when creating the priority order of the audio encodings that are common to both.

Possible choices are:

• Disabled (default) — When selected, Disabled makes the local audio encoding priority order take precedence. Disabled also makes the local Secure RTP/RTCP settings and crypto suite priority order take precedence.
• Enabled — When selected, Enabled makes the remote peer's audio encoding priority order take precedence. For ingress call legs, Enabled also makes the remote peer's Secure RTP/RTCP settings and crypto suite priority order take precedence. The default setting is Disabled.

Send Route PSPPrecedence

Specifies the audio encoding order preference in outgoing messages only. The options are:

• Disabled (default) —When selected, Disable the audio encoding order preference.
• Enabled — When selected, Enable the audio encoding order preference.

The RTP Payload Type included in the RTP header of the data packet. The value ranges from 0 to 127 and the default value is 56.

Specifies the maximum data packet size (Kilobits). The options are:

• 10
• 20
• 30

• 40

Specifies if the Rtcp option should be enabled or not. The options are:

• Disable (default)
• Enable – RTCP is used for the call.

• Disable (default) — RTCP is relayed between the end points for pass-through calls.
   
• Enable — Enable flag (as well as Rtcp flag) on one leg to terminate RTCP sessions on each leg for pass-through calls. If RTCP and RTCP termination is enabled on one leg of a pass-through call, RTCP is terminated and originated for that leg. If RTCP is enabled on both legs on the pass-through call, irrespective of Termination For Passthrough settings, RTCP is always relayed.
  
  

If this flag is enabled, SBC ignores the configured RR/RS values in the Packet Service Profile and send RR/RS = 0 in the offer/answer and disables RTCP when the call is active. When the call is HELD, and a RE-INVITE is sent, SBC uses the configured values in the Packet Service Profile for RTCP bandwidth and enables RTCP. When the call is RESUMED, SBC again disables RTCP by sending RR/RS=0 in the RE-INVITE.

The value of RR ranges from 100-4000 and the value of RS ranges from 100-3000.

If this flag is disabled, the older behavior of SBC is applicable.

The options are:

• Disabled (default)
• Enabled


Enter a value of 0, or a value in the range of 400-32767 to specify the Packet Loss Threshold (number of lost packets/100,000) which will trigger a Packet Loss Action. This parameter is required if RTCP is enabled. When set to “0”, no packet loss inactivity detection is performed. The default value is 0. 

This setting can be used in conjunction with   Media Peer Inactivity. To set media peer inactivity timeout value, see Media Peer Inactivity parameter in Media Peer Inactivity page.

For an example configuration of this parameter, see Packet Service Profile (CLI) page.

Specifies the RTCP bandwidth allocated to active data senders. The value ranges from 100 to 4000 and the default value is 250.

Specifies the RTCP bandwidth allocated for receivers. The value ranges from 100 to 3000 and the default value is 250.

• None — Take no action.
• Packet Loss Trap — Generate trap.

• Packet Loss Trap And Disconnect — Generate trap and disconnect.

By default, this flag is enabled to allow SID packets to be sent within a minimal interval during a silence period (at least one SID packet must be sent within a SID maximum packet time frame). The options are:

• Disable
• Enable (default)

Defines the codec entry priorities and codec names. Up to 12 codec configurations are supported by the SBC in PSX and Advanced ERE deployment scenarios (see Routing and Policy Management for a description of the different routing configurations).

This attribute specifies the codec entry with a priority of "1". For each codec entry, select the desired codec. Codec IDs available by default are:

• G711-DEFAULT
• G711SS-DEFAULT
• G723-DEFAULT
• G723A-DEFAULT
• G726-DEFAULT
• G729A-DEFAULT
• G729AB-DEFAULT

 Transcode options:

• Conditional (default)
• Determined By Psp For Other Leg
• Only
• Transcoder Free Transparency



 Apply fax tone treatment. The options are:

• Disable (default)
• Enable

Enable this flag to perform transcoding when the ingress and egress call legs use different DTMF relay methods. The options are:

• Disable (default)
• Enable

 Enable this flag to perform transcoding when the ingress and egress call legs use different packet sizes. The options are:

• Disable (default)
• Enable

Enable this flag to perform transcoding when the ingress and egress call legs use different silence suppression methods. The options are:

• Disable (default)
• Enable

Enable this Honor Offer Preference (HOP) flag to honor the codec preference of the peer's offer when the 'Honor Remote Preference' flag on the PSX is enabled.  This option is available only when transcode = conditional. (See the table below describing SBC behavior when this flag is enabled/disabled). The options are:

• Disable (default)
• Enable

The SBC triggers a new offer towards the other side when an answer is received for a re-INVITE from this side. The re-INVITE generated on the other side carries all possible codecs in Route Packet Service Profile that causes the most preferred codec of the other side peer to be modified. Enable this Honor Answer Preference (HAP) flag to lock down the most preferred codec towards the peer irrespective of re-INVITE received for mid-call modification from this side. (See the table below describing SBC behavior when this flag is enabled/disabled). The options are:

• Disable (default)
• Enable

Enable flag to disallow data calls. The options are:

• Disable (default)
• Enable

Flag to specify whether digit detection is enabled on digits sent to the network. The options are:

• Disable (default)
• Enable

INFO: See Digit Detect Send Enabled Settings for KPML table below to understand which PSP leg to enable this flag for the desired KPML functionality.

Enable flag to use direct media as needed. The options are:

• Disable (default)
• Enable

Flag to validate peer support for DTMF events. Enable this flag for all peer devices that support RFC 4733. The options are:

• Disable (default) – SBC does not validate the presence of DTMF events in the offer or answer from the peer. If DTMF relay is enabled, SBC transmits DTMF digits received from the other leg to this peer using the named event RTP payload.
• Enable – SBC validates the presence of DTMF events in the offer or answer from peers that support RFC 4733. If DTMF Relay is enabled and events 0-15 are received (with no other combination or subset of events), SBC forwards the events in the egress leg to this peer using the named event RTP payload. When SBC is configured for a pass-through call and it receives DTMF events other than 0-15 from the ingress peer, it does not offer any DTMF events to the egress endpoint.

Enable flag to interwork DTMF with out-of-band RFC2833 without using transcoding. The options are:

• Disable (default)
• Enable


When enabled on both the Ingress and Egress call leg, the DSCP value in the IP header of the media packets is transparently passed through the system. Once media is received from the peer, any value set in the Type Of Service field on the Packet Service Profile has no effect when Dscp Passthrough is configured on both legs for the associated call. The options are:

• Disable (default)
• Enable

Enable flag to generate a new SSRC (using a random value) along with a new timestamp on a new RTP stream whenever a resource is reactivated (due to change in codec, etc.). SSRC randomization reduces the probability of collision in large groups and simplifies the process of group sampling that depends on uniform distribution of SSRCs. The options are:

• Disable (default)
• Enable
  

The following Data Rate Management Types are supported:

• Type1 Local Generation Of Tcf – Type 1 data rate management requires that the Training Check Frame (TCF) training signal is generated locally by the receiving gateway. Data rate management is performed by the emitting gateway based on training results from both PSTN connections. Type 1 is used for TCP implementations and is optionally used with UDP implementations.
• Type2 Transfer Of Tcf – (default) Type 2 data rate management requires that the TCF is transferred from the sending gateway to the receiving gateway rather than having the receiving gateway generate it locally. Speed selection is done by the gateways in the same way as they would on a regular PSTN connection. Data rate management type 2 requires the use of UDP and is not recommended for use with TCP.

Use this object to select the T.38 Maximum Bit Rate which controls and manipulates bits 11, 12, 13, and 14 in the DIS command received by the SBC from either the TDM circuit interface or the T.38 packet interface:

• 2.4Kbits_s – For modem type ITU-T V.27ter fall-back mode.
• 4.8Kbits_s – For modem type ITU-T V.27ter.
• 9.6Kbits_s – For modem types ITU-T V.27ter and V.29.
• 14.4Kbits_s – (default) For modem types ITU-T V.27ter, V.29, and V.17. This setting is used to constrain the type of modem modulation schemes.

Use this flag to allocate DSP resources, when available, for T.38 Error Correction Mode (ECM) calls.

• Disable – (default) use normal resource allocation.
• Enable

Enable flag to allow fallback to standard RTP/RTCP when crypto attribute negotiation fails. The options are:

• Disable (default)
• Enable

Enable this flag to enable secure RTP/RTCP. The options are:

• Disable (default)
• Enable

Enable flag to reset the SRTP Roll Over Counter when the session key changes. The options are:

• Disable (default)
• Enable

Enable flag to reset Roll Over Counter for both encryption and decryption when decryption key changes. The options are:

• Disable (default)
• Enable

For an SRTP call, if this flag is enabled in Packet Service Profile and call leg mode is changed from sendonly/inactive/recvonly to sendrecv, the SBC generates a new set of crypto attributes. The options are:

• Disable (default)
• Enable

The maximum allowable session bandwidth (in Kbps) for a call that includes video streams. This value includes the bandwidth for all streams in the call (audio, video, BFCP, and so on). If "0" is set as the value, video calls are not allowed; and only audio calls can be set up following the normal allocation process (range: 0-50000 Kbps / default = 10).

The amount, as a percentage, to reduce the session bandwidth allocation for calls that include video streams. This setting only affects the internal allocation of bandwidth used for the calls (does not affect the signaling). For example, if the reduction factor is "20", the bandwidth allocated for calls is reduced by 20%. In other words, if the normal bandwidth allocation for calls is 1000 Kbps, a 20% reduction equates to a new 800 Kbps bandwidth. (range: 0-100 / default = 0).

IPv6 traffic class. (range: 0-255 / default = 0).

By default, this flag is enabled to allow call to continue with the audio only portion if the video cannot be established for any reason. The options are:

• Disable

• Enable (default)


When enabled, specifies a fall back to standard RTP when crypto attribute negotiation fails. The options are:

• Disable (default)
• Enable

When enabled, this parameter enables the secure RTP. The options are:

• Disable (default)
• Enable

When enabled, the Relays DTLS-sRTP audio and video streams are enabled on the SBC. The options are:

• Disable (default)
• Enable

When enabled, the Relays DTLS/SCTP streams are enabled on the SBC. The options are:

• Disable (default)
• Enable