ACO Line | VoIP

Last Updated : Jun 19, 2024 |
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Resource Id: ACO_Line_VoIP:9705
This form is used to configure the VoIP settings applied to calls on the ACO line.
You can merge these settings without needing to reboot the IP Office.

Configuration Settings

Field
Description
Re-Invite Supported
Default = Off.
When enabled, the IP Office can use Re-Invite during a call to change the characteristics of the call. For example, when the target of an incoming call or a transfer does not support the codec originally negotiated on the trunk.
  • Requires the ITSP to also support Re-Invite.
  • This setting must be enabled for video support.
Codec Selection
Default = System Default
Set the supported codecs. Where possible, Avaya recommend that you use the same set of codecs for all IP Office systems, lines, and extensions.
The options are:
  • System Default - Use the codec list set in the system settings.
  • Custom - Configure a list of codec preferences for the line.
    • You can move codecs between the Unused and Selected sets and change the order of the codecs.
    • The codecs available are set by System | System | VoIP | VoIP. The possible codecs are:
      • OPUS - Supported on Linux-based IP Office systems only.
      • G.711 ALAW/G.711 ULAW
      • G.729
      • G.723.1 - Supported on IP500 V2 systems only.
      • G.722 64K - Supported by Linux-based IP Office systems and on IP500 V2 systems with IP500 VCM, IP500 VCM V2 or IP500 Combo cards.
Fax Transport Support
Default = None.
If enabled, when the IP Office detects fax tone, it will renegotiate the call codec as configured below.
  • This option requires Re-Invite Supported.
  • IP Office systems in a network support fax relay for fax calls between systems.
  • IP500 V2 systems can terminate T38 fax calls.
  • Linux-based IP Office systems can route the calls between trunks/terminals with compatible fax types.
The supported options are:
  • None - Do not support fax.
  • G.711 - Use G.711 to send and receive faxes.
  • T38 - Use T38 to send and receive faxes.
  • T38 Fallback - Use T38 to send and receive faxes. If the call destination does not support T38, the IP Office will send a re-invite to change the transport method to G.711.
Call Initiation Timeout (s)
Default = 4 seconds. Range = 1 to 99 seconds.
Sets how long the IP Office system should wait for a response to an attempt to initiate a call before following the alternate routes set in an ARS form.
DTMF Support
Default = RFC2833 (IP500 V2), RFC2833/RFC4733 (Linux-Based Server)
Sets how the IP Office signals DTMF key press digits to the remote end. The options are:
  • In Band - Send digits as tones within the call audio.
  • RFC2833 or RFC2833/RF4733 - Send digits using a separate audio stream from the call audio. If not supported by the far end, the line reverts to using In Band signaling.
  • Info - Send the digits in SIP INFO packets.
Media Security
Default = Enforced.
These setting control whether SRTP is used for this line and the settings used for the SRTP. The options are:
  • Same as System: Matches the system setting at System | System | VoIP | VoIP Security.
  • Disabled: Use RTP.
  • Preferred: Attempt to use SRTP. If SRTP call setup is unsuccessful, fall back to RTP.
  • Enforced: Use SRTP. If SRTP call setup is unsuccessful, the call fails.
    • For calls using Dial Emergency, the IP Office will switch to RTP if SRTP call setup fails.
Advanced Media Security Options
Default = Same as System.
Sets the requirements for SRTP when enabled.
  • Same as System:
    Use the same settings as configured on System | System | VoIP | VoIP Security.
  • Encryptions: Default = RTP
    Sets which parts of a session SRTP protects using encryption.
  • Authentication: Default = RTP and RTCP
    Sets which parts of the session SRTP protects using authentication.
  • Replay Protection SRTP Window Size: Default = 64. Not adjustable.
    The IP Office will accept authenticated packets that have a sequence number that is higher than or within 64 packets of the highest-numbered packet already received.
  • Crypto Suites: Default = SRTP_AES_CM_128_SHA1_80.
    Set the crypto suites SRTP uses for encryption. The options are SRTP_AES_CM_128_SHA1_32 and SRTP_AES_CM_128_SHA1_80.
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ACO Line