Supported services

4 Overview	Nortel Networks Confidential

The SIP PRI Gateway supports the following call types:

•SIP to PRI

•PRI to SIP

•PRI to PRI

The SIP PRI Gateway supports the following call features:

•Basic call: The ability to make a call.

•Hold/Retrieve: The ability to hold and retrieve calls.

•Call transfers: The ability to forward the call to a third party after the call is established. Call transfer is limited to SIP clients. Callers from the PRI-enabled switches cannot perform this function.

•Call redirect: The ability to forward a call before it is answered.

•Codec negotiation: The ability to negotiate between different VoIP codecs during call setup, mid-call, call transfer, and call retrieve. The SIP PRI Gateway supports the following codecs:

—G.711 mu-law (PCMU)

—G.711 a-law (PCMA)

—G.723.1

—G.729a

•Call rejection: The ability to reject a call on nodal authentication request.

•Calling party name and number: The MCP supports the delivery/reception of calling party name and number information to/from PRI-enabled switches. Incoming calling party information privacy indication is honored by the MCP. For MCP call originations, privacy indication is not used.

•Dual-Tone Multi Frequency (DTMF) outpulsing: The ability to outpulse to PRI-enabled switches. However, DTMF detection is not provided. Military DTMF digits A-D are currently not supported.

•ISDN trunk group selection: The selection is based on information provided in a request Universal Resource Identifier (URI).

•Ringback: The SIP PRI Gateway provides ringback towards the circuit-switched side of the network.

•PRI variant support: The SIP PRI Gateway supports different PRI variants. For a list of the PRI variants that the SIP PRI Gateway supports, please refer to the MCP SIP PRI Gateway Basics document.

NN10033-111 Standard MCP 1.1 FP1 (02.02) April 2003