Hallo,
die Firmware läuft einwandfrei.
Die Unterschiede kann ich Dir auch nicht erklären, aber hier die Fehlerbehebungen von Cisco:
Cisco Unified IP Phone (SIP) running firmware version 8.3 crashes and traps intermittently
Shutdown Survivable Remote Site Telephony (SRST) service but Cisco Unified IP Phone (SIP) still shows SRST active (Pub, Sub down)
Cisco Unified IP Phone crashes during active call while accessing network settings
Multiple INVITE messages sent out when primary proxy is down
Cisco Unified IP Phone 7960/7940 (SIP) crashes when ‘cprGetBuffer()’ fails
Call to Cisco Unified IP Phone 7960 (SIP) second line fails when a conference exists on the first line
Cisco Unified IP Phone (SIP) experiences one-way audio issues under certain condition
Cisco Unified IP Phone (SIP) does not use good server when outbound proxy configured
Cisco Unified IP Phone 7960/7940 (SIP) does not advertise comfort noise in Session Definition
Protocol (SDP) when Voice Activity Detection (VAD ) is on
Cisco Unified IP Phone 7960/7940 (SIP) does not register with back up proxy
User Agent Server (UAS) sends ‘500’ response to the mismatch request
Cisco Unified IP Phone (SIP) does not failover for multiple responses for proxy address
Cisco Unified IP Phone (SIP) rejects INVITE message if header value is invalid
Cisco Unified IP Phone 7960 (SIP) hangs and the call rings out when the call ends
Cisco Unified IP Phone 7960 hangs when dialed from directory while in a conference
CANCEL/ACK message is missing ‘to’ tag during race condition
Cisco Unified IP Phone (SIP) gets stuck in partially registered state
Inconsistent ‘sh ip RxFrags’ and ‘RxFragDrops’ messages
Cisco Unified IP Phone 7960/7940 (SIP) sends ‘486 busy’ for incoming call when of
Cisco Unified IP Phone 7960 (SIP) sends bad ‘to’ tag in INVITE message, in redirect
Cisco Unified IP Phone 7960 (SIP ) crashes when receiving calls in SRST mode
RTP information is not available in SIP messages after upgrade on Cisco Unifie
Transfer or conference to URL in directory does not work
Gruss
Jan