User guide

110 SCOPIA 400/1000 Gateway User Guide
Configuring Gateway Settings
6 In the Total call capacity: n calls of n Kbps field, choose a bandwidth.
7 Click Update total call capacity.
The number of calls that the Gateway can support at that bandwidth
automatically appears.
CONFIGURING
GATEWAY
ENCRYPTION
The Gateway supports H.235-compliant AES 128 encryption for calls over IP
networks, and H.233 and H.234-compliant AES 128 encryption for calls over
ISDN networks.
Note (PRI Gateways only) An encrypted call uses double the resources of a
regular call for all bandwidth rates. Gateway capacity when encryption is
supported is therefore half of regular Gateway capacity, rounded up to the nearest
whole call.
In the Security section of the Settings tab, you can configure Gateway
encryption settings.
 Procedure
1 In the Gateway interface, on the sidebar, click Gateway (if not already
selected).
2 Click the Settings tab.
3 Click Security.
4 In the Encryption mode field, choose one of the following settings:
 No Encryption (default)—Encryption support is disabled.
 Transparent—The Gateway implements pass-through of the
encryption capabilities from side to side and does not separately
negotiate capabilities with each side of the call. This option ensures
consistent encryption status of all call legs—all legs are either
encrypted, or all legs are non-encrypted.
 Independent—The Gateway negotiates encryption settings
separately with each side of the call. This option enables you to
define a separate connection mode (IP or ISDN, or IP or Serial) for
each leg independently.