Alcatel-Lucent omniacces-voip gateway User Manual
H.323 VoIP Gateway Voice and Convergence Features
Page 1-15
H.323 Call Control and Network Interoperability (Convergence Features)
The ability to accommodate voice (also fax and modem) traffic compressed into data form via
payload packetization for transport across data networks is achieved through the use of H.323
call controls and Alcatel VoIP Network Dialing Schemes (AVNDS) as described.
payload packetization for transport across data networks is achieved through the use of H.323
call controls and Alcatel VoIP Network Dialing Schemes (AVNDS) as described.
H.323 Network Call Control
H.323 network call controls are responsible for the procedures and protocols necessary to
establish/tear down VoIP calls across the IP network. The VoIP gateway implements the
H.323 network call control standards, which include the following:
establish/tear down VoIP calls across the IP network. The VoIP gateway implements the
H.323 network call control standards, which include the following:
•
The H.225/Q.931 protocol that performs call establishment and tear down by estab-
lishing a reliable call signaling channel.
lishing a reliable call signaling channel.
•
The H.245 protocol that establishes a reliable H.245 in-band channel for communica-
tions between all endpoints or terminals, i.e., gateways, for capability exchange and
other messages.
tions between all endpoints or terminals, i.e., gateways, for capability exchange and
other messages.
•
The registration, admission and status (RAS) protocol that creates a RAS channel to
carry RAS messages between an endpoint and a gatekeeper.
carry RAS messages between an endpoint and a gatekeeper.
•
The H.323 IP network call control standards that support multimedia communications
over local area networks.
over local area networks.
The H.323 network call controls and capability provided by the H.323 call control functions
includes the following:
includes the following:
•
H.323 gateway (VoIP Switch)
•
H.323 gatekeeper (e.g., RADVision Server) (Discovery, Configuration and Operation)
•
H.323 call capabilities (Coding Profiles or Codecs, Voice Network Delay Buffers)
The voice network configuration options include general network information, H.323, H.225,
and H.245 configuration settings, gateway, gatekeeper and registration parameters, and Real
Time Transport Protocol (RTP) session parameters that must be specified for IP network
communications. Voice network call control parameters are configured at the VoIP daughter-
card level.
and H.245 configuration settings, gateway, gatekeeper and registration parameters, and Real
Time Transport Protocol (RTP) session parameters that must be specified for IP network
communications. Voice network call control parameters are configured at the VoIP daughter-
card level.
Alcatel VoIP Network Dialing Schemes (AVNDS)
The AVNDS are responsible for the operations and configuration of the VoIP daughtercard
and/or voice switching module, e.g, VSX. AVNDS are implemented on the Motorola MPC860
processor, and the switch.
and/or voice switching module, e.g, VSX. AVNDS are implemented on the Motorola MPC860
processor, and the switch.
AVNDS are responsible for providing the interface to configure and maintain all VoIP daugh-
tercards (H.323 gateways) on the entire VoIP network. Additionally, both standard packet
Management Information Bases (MIBs) and proprietary voice packet MIBs are supported.
tercards (H.323 gateways) on the entire VoIP network. Additionally, both standard packet
Management Information Bases (MIBs) and proprietary voice packet MIBs are supported.
The AVNDS are used to store information contained in VSM (Voice Switching Module) config-
uration boot files (
uration boot files (
vsmboot.asc
) concerning the configuration of the VoIP network, particu-
larly the following:
•
Destinations (H.323 endpoints, H.323 local channel destinations)
•
Phone Groups (e.g., strip digits and extensions)
•
Numbering Plans (hunt methods and hunt groups)