Configure Integrated Services Routers 4000 Series Digital Voice

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/support/docs/routers/4000-series-integrated-services-routers/118792-config-isr-00.html

Published

2023-11-09

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco website terms of use; no-redistribution; short excerpts and locators only

Source notes citing this source

• On ISR 4000 Series digital voice modules the card type t1 or card type e1 command must set the module type before the T1 or E1 controller is configured. in context
• Cisco's ISR 4000 digital voice guide configures clocking with network-clock synchronization automatic and designates a T1/E1 controller as the input source with network-clock input-source priority. in context
• On ISR 4000 Series routers the NIM multiflex trunk (T1/E1 voice) modules use only PVDM4 DSPs; PVDM2 and PVDM3 are not supported on the platform. in context
• Cisco states that voice applications on ISR 4000 Series routers require at least the Unified Communications Technology Package. in context

Cite this source record

APA

WarmTransfer. (2023, November 9). Configure Integrated Services Routers 4000 Series Digital Voice. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-technote-118792-isr4k-digital-voice

BibTeX

@misc{warmtransfer-cisco-technote-118792-isr4k-digital-voice,
  title  = {Configure Integrated Services Routers 4000 Series Digital Voice},
  author = {{WarmTransfer}},
  year   = {2023},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-technote-118792-isr4k-digital-voice},
  note   = {Cisco Systems, accessed 2026-09-24}
}