Auto Hold
Issue 1 June 2010 35
NAT
The 1603SW-I SIP IP Deskphones do not support Network Address Translation (NAT)
interworking.
DIFFSERV
Type of Service bits 0-5 (also called the Differentiated Services Code Point) are set to the binary
equivalent of the decimal number represented by the value of the following configuration
parameters:
● DSCPAUD for transmitted audio (RTP, RTCP, SRTP and SRTCP) packets;
● DSCPSIG for transmitted system-specific signaling packets;
● Zero for all other transmitted packets (e.g., DHCP, DNS, HTTP, SNMP, etc.).
Received DSCP information will be ignored.
Auto Hold
1603SW-I SIP IP Deskphones always provide auto hold, regardless of whether or not the Auto
Hold parameter is administered on the Avaya Communication Manager IP Network System
Parameters form.
Call Transfer Considerations
Unlike 1603SW-I H.323 IP Deskphones, the 1603SW-I SIP IP Deskphones transfer operation is
controlled locally by the telephone and is not affected by the settings Abort Transfer, Transfer
Upon Hang-up, and Toggle Swap, on page 7 of the system-parameters features screen.
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