call dropping

[Mel_ring]

I setup the helpdesk with phone with 5 other phone with a button to pick up the call. Calls will randomly drop in the middle of the call. I have 3 other departments with the same setup and not having issues.
They all have 7841 model phones. after the 4 ring calls are routed to our 3rd party calling center

Would you recommend a different phone? Different approach. There are other departments on the same switch that do not drop calls. Would you recommend a different approach?
cucm 11.0.1.22023-1

 

[gnrslash4life]

Same telco connection? I would start by looking at the wiring. Then work your way up.

Certifications:
A+
Network+
CCENT
CCNA Voice
TVOICE
CAPPS
CIPTV1
CIPTV2

 

[Mel_ring]

I tested each cable from the phone to the wall plate, from the wall to the patch panel, and then patch panel to switch. They all were good. all pc are daisy chained off the phone and do not lose a connection. For a helpdesk desk that gets all main call should they have a for with more pickup buttons(10) or would a normaly 7841 (4 button ) phone be good?

 

[gnrslash4life]

I would say run a pcap on one of the ports so when it happens you can see exactly what is going on.

Certifications:
A+
Network+
CCENT
CCNA Voice
TVOICE
CAPPS
CIPTV1
CIPTV2