This cannot be done. E1 PRI is designed such that there will be 2 signaling channels for all 30 data channels and therefore, you will not be able to split the PRI into 3 groups as per the customer's requirement.
You can talk to the provider and ask them to send incoming calls to the customer site only on the last 10 channels, but there isn't a way for you to send 10 calls on the first 10 channels out and stop when the 11th call tries to go out. So it's a dead-end there too.
1. inbound--This is out of your control. You will need to tell your telco to send inbound calls to eg first 10 channels..channels. channel1-10. If those are busy they should overflow to channel (whatever you want to use eg 21-30
2. For outbound you can use channel 11-20. You will need the following configuration
trunk group OUTBOUND description **** Outgoing PSTN Trunk Group*****
controller e1 0/0/0
pri-group timeslots 1-31
trunk-group OUTBOUND timeslots 11-20
int serial 0/0/0:15 no ip address isdn switch-type primary-ni isdn incoming-voice voice no cdp enable trunk-group OUTBOUND
SIP traces provide key information in troubleshooting SIP Trunks, SIP
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Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
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[toc:faq]CUCM Database Replication is an area in which Cisco customers
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