Webex Calling and Cisco VG400 Analog Telephone Adapter Technical Whitepaper

Publisher

Cisco

URL

https://www.cisco.com/c/en/us/products/collateral/unified-communications/vg-series-gateways/wc-vg400-analog-tele-adapter-wp.html

Published

2022-01-31

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• Once a VG400 is registered to Webex Calling, its CLI and web UI are locked and further provisioning is managed through Control Hub. in context
• Cisco's VG400 Webex Calling whitepaper lists SIP-based T.38 fax relay and G.711 fax passthrough among supported call features. in context
• VG400 FXS ports support FXS-E with 35 mA loop current and loop lengths up to 11,000 feet (3,400 m) on 26 AWG wire. in context
• A cloud-registered VG400 downloads its SIP configuration from Control Hub over HTTPS, after which each configured FXS port registers to Webex Calling as a SIP line. in context
• Communication between a cloud-registered VG400 and Webex Calling is encrypted, with SIP signaling over TLS and media over SRTP. in context
• Cisco's VG400 white paper for Webex Calling states that the VG400 provides SIP-based T.38 fax relay and G.711 fax passthrough. in context

Cite this source record

APA

WarmTransfer. (2022, January 31). Webex Calling and Cisco VG400 Analog Telephone Adapter Technical Whitepaper. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-wp-webex-calling-vg400

BibTeX

@misc{warmtransfer-cisco-wp-webex-calling-vg400,
  title  = {Webex Calling and Cisco VG400 Analog Telephone Adapter Technical Whitepaper},
  author = {{WarmTransfer}},
  year   = {2022},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-wp-webex-calling-vg400},
  note   = {Cisco, accessed 2026-09-24}
}