Cisco Unified Bound Aspect Overview
The Cisco UBE is an able unified communications arrangement bound element. A Cisco
UBE, aforetime accepted as the Cisco Multiservice IP-to-IP Gateway, terminates and reoriginates
both signaling (H.323 and SIP) and media streams (Real-time Transport Protocol
[RTP] and RTP Control Protocol [RTCP]) while assuming bound alternation services
between IP networks. Cisco UBE, in accession to added Cisco IOS Software features,
includes affair bound ambassador (SBC) functions that advice accredit end-to-end IP-based
transport of voice, video, and abstracts amid absolute unified communications networks.
Originally, SBCs were acclimated by account providers (SPs) to accredit abounding announcement capabilities
within VoIP networks. But the functionality to interconnect VoIP networks is becoming
more and added important for action VoIP networks as well, because VoIP is becoming
the new accepted for any telephony solution.
Designed to accommodated action and service-provider SBC accessory needs, the Cisco UBE is an
integrated Cisco IOS Software appliance that runs on assorted Cisco router platforms.
For a account of platforms, see the afterward link: http://www.cisco.com/en/US/products/sw/
voicesw/ps5640/products_white_paper0900aecd8067937f.shtml.
Cisco UBE functionally is implemented on Cisco IOS gateways appliance a appropriate Cisco IOS
feature set. Appliance this affection set, a Cisco UBE can avenue a alarm from one Articulation over IP
(VoIP) punch associate to addition VoIP punch peer.
VoIP punch aeon can additionally be handled by either the Affair Initiation Protocol (SIP) or
H.323. As a result, the adequacy to interconnect VoIP punch aeon additionally includes the capability
to interconnect VoIP networks appliance altered signaling protocols or VoIP networks
using the aforementioned signaling protocols but adverse interoperability issues.
Protocol interworking includes these combinations:
■ H.323-to-SIP interworking
■ H.323-to-H.323 interworking
■ SIP-to-SIP interworking
Figure 9-1 illustrates the adequacy of Cisco UBE to interconnect VoIP networks, including
VoIP networks that use altered signaling protocols. VoIP interworking is achieved
by abutting an entering VoIP punch associate with an outbound VoIP punch peer. A standard
Cisco IOS aperture after the Cisco UBE functionality will not acquiesce VoIP-to-VoIP
connections.
522 Authorized Self-Study Guide: Cisco Articulation over IP (CVOICE)
SIP or H.323 SIP or H.323
Inbound
VoIP Punch Peer
Outbound
VoIP Punch Peer
Cisco UBE Connects
VoIP Punch Peers
Cisco UBE
V
Figure 9-1 Cisco UBE Functionality
The Cisco UBE provides a network-to-network interface point for the following:
■ Signaling interworking (H.323, SIP)
■ Media interworking (dual-tone multifrequency [DTMF], fax, modem, and codec
transcoding)
■ Address and anchorage translations (privacy and cartography hiding)
■ Announcement and alarm detail almanac (CDR) normalization
■ Quality-of-service (QoS) and bandwidth administration (QoS appearance appliance differentiated
services cipher point [DSCP] or IP precedence, bandwidth administration using
Resource Reservation Protocol [RSVP], and codec filtering)
A Cisco UBE interoperates with several arrangement elements, including articulation gateways, IP
phones, and call-control servers in abounding appliance environments, from avant-garde enterprise
voice and/or video casework with Cisco Unified Communications Manager or Cisco
Unified Communications Manager Express, as able-bodied as simpler toll-bypass and VoIP transport
applications.
The Cisco UBE provides organizations with all the bound ambassador functions integrated
into the arrangement band to interconnect unified communications articulation and video
enterprise-to-service-provider architectures. The Cisco UBE is acclimated by action and
small- and medium-sized organizations to interconnect SIP accessible switched blast network
(PSTN) admission with SIP and H.323 action unified communications networks.