New Parameter For Configurable Contact Header Matching - Aastra 6739i Release Note

IP Phone Release Notes 3.0.1 Beta 2
New Features in Release 3.0.1

New Parameter for Configurable Contact Header Matching

When sending SIP packets, the IP Phones observe the Contact header by matching the username,
domain name, port, and transport per SIP RFC 3261.This is called "strict SIP Contact header
matching." However, in specific networks (such as behind some SOHO routers), the phone
registers with its private address in the Contact, but when the response is sent back, the router
maintains the public side IP address in the Contact header. This causes a non-matching Contact
header and the phone does not accept the new registration expiry timer.
A new parameter, "sip contact matching", now allows the Administrator to specify the method
used by the phone to match the Contact Header. This parameter is available via the configuration
files only.
Configuring the Contact Header Matching
Parameter –
sip contact matching
Description
Format
Default Value
Range
Example
6
Configuration Files aastra.cfg, <mac>.cfg
Specifies the method for which the phone uses to match the Contact
header in a SIP registration packet.
Integer
0
0 (default) URI matching of username, hostport (domain name and
port), and transport
1 matching of domain name and port only
2 matching of username only
3 matching of port and username only
4 matching of domain name, port, and username only
sip contact matching: 1
RN-001037-00 Rev 02, Release 3.0.1