Try to change the JOIN ACROSS LINES setting on Device Profile Configuration page to ON
From the drop-down list box, choose from the following options:
Off—This device does not allow users to use the Join Across Lines feature. On—This device allows u...
If the voice gateway is sending the right digits, then check the CSS and Partitions on the CUCM for:
1. The voice gateway and
2. The trunk to Unity
Calling Party Gets a Reorder Tone Symptom
Calling party gets a reorder tone or a message: "This call ...
These two articles should help you,
https://wiki.uas.alaska.edu/page/ITS:Phone_System/VG204_Setup
http://cyruslab.net/2012/09/19/cucm-8-62a-and-vg204-integration/
