[asterisk-users] The To header was truncated in call... Whats this means?

[Vitor Mazuco]

Hi everybody,

My Asterisk, all time appear this log

[Jan  7 15:37:04] ERROR[1174] chan_sip.c: The To header was truncated
in call '6c66e5b6058ae257003c0f7e778da0fe at 191.xxxxxxxxx'. This call
setup will fail.
[Jan  7 15:37:18] ERROR[1174] chan_sip.c: The To header was truncated
in call '18e0a12e434364254b0cc2e52d20755b at 191.xxxxx. This call setup
will fail.
...............

Whats this massege means?

Thanks.