display ip-media-set

Last Updated : Apr 09, 2018 |

Use change ip-codec-set to independently view codec sets used for media encryption or not.

Syntax

display ip-codec-set [ n ] OR display ip-media-parameter [ n ]
n

Codec set number.

IP Media Parameter field descriptions — Page 1

Field

Description

Codec set

Specifies the codec set used between the network regions.

If blank, there is no connectivity between the network regions.

Audio codec

Name of the audio codec in this codec-set:

  • G.711A (a-law)

  • G.711MU (mu-law)

  • G.722-64k

  • G.722.1-24k

  • G.722.1-32k

  • G.722.2

  • G.723.5.3

  • G.723.6.3

  • G.726A-32k

  • G.729

  • G.729A

  • G.729B

  • G.729AB

  • OPUS-NB12

  • OPUS-NB16

  • OPUS-WB20K

  • OPUS-WB24K

  • SIREN14-24k

  • SIREN14-32k

  • SIREN14-48k

  • SIREN14-S48k

  • SIREN14-S56k

  • SIREN14-S64k

  • SIREN14-S96kk

Silence Suppression

Specifies whether RTP-level silence suppression is enabled on the audio stream.

Frames Per Pkt

Number of frames per packet up to a packet size of 60 milliseconds (ms). 1–6 or blank.

  • G.711 default frame size is 2 (20 ms).

  • G.723 default frame size is 3 (30 ms).

  • G.729 default frame size is 2 (20 ms).

Packet Size (ms)

Size of the packet in milliseconds (ms).

Media Encryption

The options for each codec set apply to all codecs defined in that set.

Appears when Media Encryption Over IP is y on the system-parameters customer-options screen.

Encrypted SRTCP

Specifies the Encrypted SRTCP is used to protect media control streams.

IP Media Parameter field descriptions — Page 2

Field

Description

Allow Direct-IP Multimedia

Specifies whether direct multimedia is allowed using the following codecs:

  • H.261

  • H.263

  • H.264 (video)

  • H.224

  • H.224.1 (data, far-end camera control)

Clear-channel Mode

Specifies whether the support for this codec set for BRI data calls is enabled.

ECM

Specifies whether ECM-capable gateways use the T.38 protocol to relay T.30 ECM signaling and ECM frames between a local Group 3 fax machine and a far-end T.38 receiver.

FAX mode

  • If you enter off, Communication Manager treats a fax call as an ordinary voice call. Turn off special fax handling.

  • If you enter relay, Communication Manager uses the relay mode for fax transmissions over IP network facilities only between Avaya devices. This mode may be coupled with Redundancy.

  • If you enter pass-through, Communication Manager uses the pass-through mode for in-band fax transmissions over IP network facilities only between Avaya devices. This mode may be coupled with Redundancy.

  • If you enter T.38–standard, Communication Manager uses the T.38 protocol for fax transmission over IP network facilities.

  • If you enter T.38–G711–fallback, Communication Manager uses the T.38 protocol for fax transmission only if the protocol can be successfully negotiated with the peer SIP entity. Otherwise, Communication Manager falls back to G.711 for transmission. This mode requires a G.711 codec to be administered on the ip-codec-set screen.

Note:

If you have a telephone on an IP trunk that is close to a fax machine, the telephone can pick up the tones from the fax machine and change into the fax mode. To prevent this, turn off FAX mode and place fax machines in an Automatic Route Selection (ARS) partition that uses only circuit switched trunks, even for inter-gateway fax calls.

Maximum Call Rate for Priority Direct-IP Multimedia

The system displays this field only if Allow Direct-IP Multimedia is set to y.

Maximum Call Rate for Direct-IP Multimedia

The system displays this field only if you set the Allow Direct-IP Multimedia to y.

Modem Mode

  • Enter off if you want to use this mode to treat a modem call as an ordinary voice call. Turn off special modem handling. The default mode for new installations and upgrades is off.

  • Enter relay if you want to use this mode for transporting modem traffic over IP using V.32 relay only between Avaya devices.

  • Enter pass-through if you want to use this mode for transporting modem traffic over IP network facilities only between Avaya devices.

  • Enter v150mr if you want to use this mode to use V.150.1 protocol to transmit modem signals between modems and telephony devices. The V.150.1 Modem-over-IP feature is used to interoperate with secure terminals and third-party SIP gateways.

Redundancy

Specifies the number of duplicate or redundant packets that must be sent in addition to the primary packet.

TDD/ TTY Mode

  • Enter off to turn off special TTY handling when using this codec set. In this case, the TTY transmission is treated like an ordinary voice call. With a codec set that uses G.711, this setting is required to send TTY calls to non-Avaya systems. However, there might be errors in character transmissions.

  • Enter US to use U.S. Baudot 45.45 mode for TTY transmissions over IP network facilities. This is the default for new installations and upgrades.

  • Enter UK to use U.K. Baudot 50 mode for TTY transmissions over IP network facilities.

  • Enter pass-through to use pass-through mode for TTY transmissions over IP network facilities.

IP Media Parameters field descriptions — Page 3

The system displays this page only when you set the Modem Mode field to v150mr.

Field

Description

Modem Relay Preferred (NoAudio)

Specifies whether Communication Manager includes the NoAudio codec in the SIP SDP offer/ answer message. You must enable this feature when a gateway interoperates with the devices that support offer/answer NoAudio codec. The default value is n.

Modulation Mode

Avaya V.150.1 supports the V.32, the V.34, the V.90, and the V.92 modem modulations. For users who need other modulations, you must set the Modem Mode field to pass-through. The following fields determine whether V.150.1 is enabled to transport the respective modulations as Modem Relay.

V. 32

Specifies whether the V.32 digital modem modulation is enabled

V.34

Specifies whether the V.34 digital modem modulation is enabled

V.90

Specifies whether the V.90 digital modem modulation is enabled

V.92

Specifies whether the V.92 digital modem modulation is enabled

SPRT Retransmissions

Specifies the maximum number of data retransmissions to Transport Channel 1 ( TC1) and Transport Channel 2 (TC2).

SPRT TC0 Payload Size

Specifies the maximum payload size to SPRT Transport Channel 0.

SPRT TC1 Payload Size

Specifies the maximum payload size for SPRT Transport Channel 1.

Note:

Maximum SPRT payload sizes might vary across different gateways depending on the firmware and the hardware version.

SPRT TC1 Window Size

Specifies the window size to SPRT Transport Channel 1. You can enter a value from 32 to 96. The default value is 32 bytes.

SPRT TC2 Payload Size

Specifies the maximum payload size to SPRT Transport Channel 2. You can enter a value from 132 to 256. The default value is 132 bytes.

Note:

Maximum SPRT payload sizes might vary across different gateways depending on the firmware and the hardware versions.

SPRT TC2 Window Size

Specifies the window size to SPRT Transport Channel 2. You can enter a value from 8 to 32. The default value is 8 bytes.

SPRT TC3 Payload Size

Specifies the maximum payload size to SPRT Transport Channel 3. You can enter a value from 140 to 256. The default value is 140 bytes.

Note:

Maximum SPRT payload sizes might vary across different gateways depending on the firmware and the hardware version.

SPRT Timer TC1-TA01

Specifies the value of the acknowledgement timer of Transport Channel 1. You can enter a value from 50 to 150 in increments of 10. The default value is 90.

SPRT Timer TC1-TA02

Specifies the value of the acknowledgement update timer of Transport Channel 2..

SPRT Timer TC1-TR03

Specifies the value of the retransmit timer of Transport Channel 1.

SPRT Timer TC2-TA01

Specifies the value of the acknowledgement timer of Transport Channel 2.

SPRT Timer TC2-TA02

Specifies the value of the acknowledgement update timer of Transport Channel 2.

SPRT Timer TC2-TR03

Specifies the value of the retransmit timer of Transport Channel 2.

SSE Inter-Packet Interval

Specifies an interval between the State Signaling Events (SSE) packets.

SSE Repetition Redundancy (Packets)

Specifies the number of redundant SSE packets for transmission. The redundancy option provides robust transport of data packets across an IP-based network.

V.42 error correction

V. 42 is an error correction protocol for V.150.1 media transport between modems. If you set this field to y, the gateways to use the V.42 error correction protocol. The default value is n.

Media Connection IP Address Type Preference

Specify the IP address type as IPv4 or IPv6.