iam runing SER
and my client is registering with Asterisk, running call center
he keep getting the following error
chan_sip.c: Forbidden - wrong password on authentication for INVITE to '"M0601001458000013456" <sip:user@domain.com>;tag=as5bbc2eec'
and voice going choppy, when he call from single user the voice go clear
when he intiates the calls from number of people voice is very choppy
and some time not able to hear
all are public IP, not NAT here
any suggestions