HI Kievit
thanks for your information
for the issue, do you mean the scenario below :
1. register successfully, then call out to B
2. B answer the call ,then the LCD of handset showing call is established with 00:00
3. at this time the voice will delay for about 3 seconds, like when you say "hello。。。"and 3 sends later , the other side receive the voice , and the same situation when B side speaking ???
4. what is the rate that this issue happen ?
pleas try a hard rest to the BASE , do a hard rest for W52, the steps are below:
1. connect the network cable to the base
2. long press the paging key on the base and not stop until step3 is finished
3. connect the power to base , waiting for the three lights on the base light up one by one , during the whole process, please keep pressing the paging key !
4. after the three lights all light up, release the paging key and reconnect the power supply
then do a rest to the handset and test again
if all the above solution can't solve your issue, please provide us the trace file for future analysis,trace file including pcap file, config bin and syslog file , and we need three of them provide at one time.
for how to get them , please refer to the FAQ below:
http://forum.yealink.com/forum/showthread.php?tid=1319
send to trace file and issue description to support@yealink.com , then we will follow up
let me know if any question
TKS & BR
Michael