In this section:
The supports up to six media streams per session. Additional streams received are rejected.
The supports the following media functionality:
The supports ITU H.323 audio calls, including protocol and codec inter-working with SIP and GW calls. The following H.323 call types are supported:
The call rate and call capacity for H.323 depends on the specific type of H.323 calls, and is listed on the SBC Product Specifications page.
The also supports H.323 video calls. See Video Support page for details.
The SIP call handling functionality is described on this page.
Call rates are defined as maximum sustained call rates while meeting design criteria. Peak rates are understandably higher, but network planning should use sustained rates since they apply across a wider range of network conditions:
The maximum call rate applies across many variants of SIP calls:
The maximum call rate is unaffected by many useful functions. There is no de-rating for:
Different types of call (policy) routing are possible. Maximum call rates still apply unless otherwise stated:
The maximum call rate is unaffected by the number of active calls. This rating applies whether there are few calls in box as well as when the number of active calls is near the full capacity.
Call capacity is limited only by the box-wide limit (150,000 calls), the maximum number of DSPs (depends on the codec combinations), or the physical limits of the network interfaces. Call capacity is not limited by:
SIP call rates and capacities are listed on the SBC Product Specifications page.