trunk between CUCM and Yeaster PBX

[mhmadabdallah91]

dears

we set trunk between cucm 12.5 and yeaster pbx

when call from cucm ext the yeaster EXT. ring but we cant hear us

when yeater try to call cucm receive MSG not found

can any one help me.

[Nithin Eluvathingal]

when call from cucm ext the yeaster EXT. ring but we cant hear us:- Could be due to Routing. Check if you can ping Phone subnets. When Pining make sure you ping both side.

when yeater try to call cucm receive MSG not found:- Check if you have configured proper  inbound calling search space which can reach CUCM phones.

[mhmadabdallah91]

thanks for your reply

Check if you can ping Phone subnets. (the two subnets are ping )

Check if you have configured proper  inbound calling search space which can reach CUCM phones.

can you explain its from yeaster or cucm side

[Nithin Eluvathingal]

If both subnets are pining, what codec you use between these trunks ? try to use  same codec. Is there a Firewall in between ? 

I can see large number of document in yeastar site with detailed steps on how to configure sip trunk between CUCM and yeastar. Did you verified those documents. 

Check if you have configured proper  inbound calling search space which can reach CUCM phones.

Its on your CUCM, On Trunk page Inbound select proper CSS which can reach  the phones.