AudioCodes Mediant 800B - 31 Utilizing Gateway Channel Resources for SBC

Version 7.2 693 Mediant 800B Gateway & E-SBC
User's Manual 31. Utilizing Gateway Channel Resources for SBC
31 Utilizing Gateway Channel Resources for
SBC
The device can utilize resources of non-configured Gateway channels (analog and digital)
for SBC sessions, regardless of whether the device is licensed for SBC functionality. This
feature, in essence, allows "call" resources to be migrated from the Gateway application to
the SBC application, allowing you to migrate your Gateway deployment to an all IP-based
voice network with only a simple configuration change. One of the main advantages of the
feature is that if you purchased the device for deploying it initially as a Gateway for PSTN
calls, you can at any stage easily use the device for SBC calls without having to purchase
an SBC license.
A Gateway channel is considered "not configured" if it is not associated with any Trunk
Group (see 'Configuring Trunk Groups' on page 517). If all Gateway channels are
configured, resources from these channels cannot be used for SBC sessions. If the
resources of a currently active SBC call is obtained from a Gateway channel and you
configure all Gateway channels during the call, the device maintains the SBC call until it is
terminated by the call parties, but obtaining resources from Gateway channels for new
SBC calls will not be made possible.
For every non-configured Gateway channel, one SBC session can be processed. For
example, a License Key licensing 1 E1 and 4 FXS and 1 BRI can support up to 37 SBC
sessions (31 channels for E1 + 4 channels for FXS + 2 channels for 1 BRI port) if all the
Gateway channels are not configured. If the License Key also provides a license for 5 SBC
sessions, up to 42 SBC sessions (31 channels for E1 + 4 channels for FXS + 2 channels
for 1 BRI port + 5 sessions for SBC) can be supported.
The number of SBC sessions that can be supported if Gateway channels are not
configured is displayed in the Web interface's License Key page (see 'Viewing the License
Key' on page 864), which displays the licensed features according to the installed License
Key.
Note:
• To support the feature, the License Key installed on your device must include the
"TDMtoSBC" feature key; otherwise, to purchase the feature, contact your
AudioCodes sales representative to upgrade your License Key.
• The maximum number of SBC sessions that can be supported is according to the
device's maximum SBC capacity (see 'Channel Capacity' on page 1331).