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14.3.2.2. Restrictions
Common Gateway HG 3500: SRTP is not supported for native SIP trunking.
Outband signaling is not supported.
The function must be deactivated via WBM:
WBM > Configuration > Voice Gateway > Payload > HW Modules
Trunking between HiPath 3000 and OpenScape 4000
SIP registration of the HG 3500 board at the Large Enterprise Gatekeeper (LEGK) is not supported.
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03/2026
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