cant configure network-clock select 1 controller E1 x/x/x

[baselzind]

im configuring a H323 E1 voice gateway but whenever i input this command "network-clock select 1 controller E1 0/1/0" i get this message 

"G.781 based clock selection process is enabled Please unconfigure G.781 based configuration before configuring network-clock select config"

and i cant figure out how to unconfigure it?

also is this command correct with regard to the slot , port adapter and port number

configure network-clock select 1 controller E1 0/1/0

this is "show inv"

NAME: "NIM subslot 0/1", DESCR: "NIM-1MFT-T1/E1 - T1/E1 Serial Module"
PID: NIM-1MFT-T1/E1 , VID: V05

[Jonathan Schulenberg]

You may want to check out these articles:
https://www.cisco.com/c/en/us/td/docs/routers/access/4400/feature/guide/isr4400netclock.html
https://community.cisco.com/t5/collaboration-voice-and-video/t1-pri-line-clock-design-considerations-on-isr4k/ta-p/3163800

[baselzind]

please can any expert suggest any solution?

[Roger Kallberg]

Please post your running config so that we can see what you have configured.

[Nithin Eluvathingal]

use the below configuration.

controller E1 0/1/0

framing no-crc4

clock source line primary

pri-group timeslots 1-20 

network-clock synchronization automatic

network-clock input-source 1 controller E1 0/1/0

network-clock input-source 2 controller E1 0/1/1

[Nithin Eluvathingal]

you can also include below to synchronize individual channels.

network-clock synchronization participate slot / subslot

Below samples config

Sample Configuration

network-clock synchronization automatic 
network-clock synchronization participate 0/2

controller E1 0/1/0

framing no-crc4

clock source line primary

network-clock input-source 1 controller E1 0/1/0

network-clock input-source 2 controller E1 0/1/1

[baselzind]

it turns out this command "network-clock select 1 controller E1 x/x/x" isnt needed to begin with