Step 1 Capture and analyze SoftConsole logs.
The SoftCo sends a NOTIFY message with 200 OK to the peer office, indicating a forwarding success.
Step 2 Capture and analyze SoftCo5816 logs.
The terminal under the SoftCo sends an INVITE message to the mobile phone, and the mobile phone returns a 488 error message. The SoftCo negotiates with the mobile phone to use the G711A codec and negotiates with the intra-office phone to use the G711U codec. When the agent talks with the intra-office user and transfers the call, the codec mode used between the SoftCo and the intra-office phone is used for negotiation with the mobile phone. The INVITE message carries the G711U codec that is not supported by the peer office. Therefore, the call cannot be forwarded.
Step 3 Change the voice codec priorities. The codec ranked first has the highest priority.
config system codetype <g711a&g711u&g729&g723&ilbc_1520&ilbc_1333>