Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - Overview of Cisco Unified Border Element

Publisher

Cisco

URL

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/ios-xe/config/ios-xe-book/voi-cube-overview.html

Published

unknown

Updated

unknown

Accessed

2026-09-21

HTTP status

200

License

Cisco.com terms and conditions; no-redistribution; short excerpts and locators only

Source notes citing this source

• CUBE SIP-to-SIP operation is enabled under voice service voip with mode border-element and allow-connections sip to sip. in context
• The show cube status command displays the CUBE version, software version, platform and HA configuration. in context
• From Cisco IOS XE Amsterdam 17.2.1r the capacity keyword of mode border-element is deprecated and CUBE sessions are counted through Cisco Smart Software Manager. in context
• CUBE toll-fraud prevention lets an administrator add trusted IPv4 and IPv6 addresses under voice service voip with ip address trusted list, up to 100 addresses. in context
• Cisco documents Cisco Unified Border Element as able to bridge enterprise and PSTN with cloud calling services such as Webex Calling and MS Teams Direct Routing, and describes CUBE as a network-to-network demarcation interface for signalling and media interworking, address and port translation, billing, security, quality of service, call admission control and bandwidth management. in context
• CUBE provides address and port translation for topology hiding, DTMF, fax, modem and codec transcoding interworking, and delayed-offer to early-offer conversion. in context
• CUBE is a back-to-back user agent that terminates and originates SIP signaling and RTP/RTCP media and connects enterprise VoIP networks to ITSPs. in context
• Cisco Unified Border Element bridges two separate VoIP networks, connects enterprise networks to ITSPs, and provides address and port translation for privacy and topology hiding. in context
• Pointing a RingCX External phone or SIP Route node at a Unified CM phone or DN needs an internet-reachable SIP ingress in front of Unified CM, such as CUBE, that admits RingCentral's addresses and routes the call to Unified CM. inferred in context

Cite this source record

APA

WarmTransfer. (2026, September 21). Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - Overview of Cisco Unified Border Element. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cube-config-guide-overview

BibTeX

@misc{warmtransfer-cisco-cube-config-guide-overview,
  title  = {Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - Overview of Cisco Unified Border Element},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cube-config-guide-overview},
  note   = {Cisco, accessed 2026-09-21}
}