For IP Office Release 9.1, SRTP is supported.
Support IP Office Modes: SRTP is supported in all IP Office modes.
Supported Phones: It can be applied to SIP and H323 extensions. However, there may be restrictions for some specific models of IP telephone.
Supported for H323 on 9608, 9611, 9621 and 9641 Series telephones.
Supported for SIP on Avaya and 3rd-party telephones.
Supported Trunks: It can be applied to all types of IP lines (SIP, SM and IP Office (SCN)) except external H323 trunks.
Licensing and Capacity: The use of SRTP does not require any licenses or subscription. However, the use of SRTP impacts on the call capacity of the system.