Which digital voice circuit supports 23 voice (B) channels and signaling that is earned in a dedicated 64 kb/s data (D) channel?
With Cisco Unified Communications Manager Express running on the Cisco 2921ISR G2, how many phones can be supported?
Which Cisco supported device can be added to a Cisco Unified Communications 300 Series deployment for additional PSTN lines and increased port density on the FXO ports?