Expanding and Upgrading HiPath 3000 Nur für den internen Gebrauch
A31003-H3590-S100-7-7620, 06/2012
9-38 HiPath 3000/5000 V9, Service documentation
exup.fm
Upgrading HiPath 3000
Higher demand for resources by SPE
The following table provides an overview of the higher demand for resources caused by the
SPE (Signaling & Payload Encryption) feature. The values are automatically applied by the sys-
tem. If the SPE feature is active, a reduced number of channels is reported to the system.
Higher data volume as a result of SPE
This table can be used to calculate the additional system load resulting from the Signaling &
Payload Encryption (SPE) feature:
Feature Max. number of voice channels (per DSP) Loss
HG 1500
STMI2
HG 1500
HXGS3
HXGR3
Standard 16 8 0%
QDC 16 8 6%
SRTP 12 6 20%
DMC 12 6 25%
QDC+ SRTP 12 6 24%
QDC+DMC 12 6 28%
SRTP+DMC 10 5 37%
QDC+SRTP+DMC 10 5 39%
Feature Approximate data
volume
Explanations
TLS session: These are 1-KB certificates that do not sup-
port hierarchical certification. Precisely one
certificate or precisely two certificates are
therefore transferred via LAN.
● Server authentica-
tion
1.5 KB
● Both-way authenti-
cation
2.5 KB
Fixed data volume for
TLS encryption
+ 20 to 30 bytes per
message
AES_128_CBC_SHA1 is assumed.
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