Our company has bought 12 of ISR 4321 and 7 of 4331 routers like UC bundles with CUBE-10 licenses (2x FL-CUBEE-5), and NIM-1MFT-T1/E1 to NIM-4MFT-T1/E1 Multiflex Trunk Voice/Clear-channel Data T1/E1 modules for connection to ISDN trunks about 18 mont...

Hi,re my note about:show dsp-group allDSP groups on slot 0/1 slot id 1dsp 1:State: APP_DNLDING, firmware: 0.0.0on IOS XE version 16.3.7 and 16.6.4The  DSP did not boot up because of configuration command:voice class uri 710 siphost dns:C105S1360VM012...

Hi,yesterday I encountered the same issue on Cisco ISR4321/K9 router, serial SN: FDO2204A3MB, with NIM-1MFT-T1/E1 module serial SN: FOC21502UYX and PVDM4-32 DSP module serial SN: FOC22012WEL.The device is configured as a voice gateway, ISDN to Cisco ...

Hi all,the company I am working for has decided to deploy several new VGW (voice gateways) from PSTN to company VoIP.Interface to PSTN is using E1 ISDN trunks, company VoIP is using MS Skype and Cisco CallManager (10.5).Some incoming calls from PSTN ...

I am configuring several voice gateways using Cisco ISR4321/K9 (IOS XE version 16.6.2) routers with "NIM-1MFT-T1/E1 - T1/E1 Serial Module" (and "PVDM4-32 Voice DSP Module") connecting E1 ISDN/PRI interface to CUCM and MS SfB servers connected via SIP...