Cisco 7912G - Manual (Page 141)

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Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SIP), Cisco Unified IP Phones
OL-8131-01
Appendix A Reference List of Parameters
Configuration Parameters
MsgRetryLimits Lets you configure the number of times that a phone retransmits various SIP
requests to the current proxy and the number of times that a phone sends
responses to specific requests from the SIP user agent.
When the phone sends a SIP message to the remote SIP user agent, the message
does not always reach its destination for various reasons. In this event, the
phone retries sending the same message a specified number of times before
timing out.
The number of retries is configurable for the following SIP requests:
• REGISTER
• INVITE
• BYE
• CANCEL
• REFER
• NOTIFY
• PRACK
The number of retries also is configurable for the phone’s final response to an
INVITE request from the SIP user agent.
Table A-6 describes how to configure the MsgRetryLimits parameter. For this
parameter:
• Value type—Bitmap
• Default value—0x00000000
NatServer(not used in
Cisco Unified
CallManager release
5.0) Specifies a server to which a dummy, single-byte UDP packed is sent to
maintain a Network Address Translation (NAT) during a session.
This parameter can contain up to 47 characters in fully qualified domain name
(FQDN) or IP format with an optional port parameter (separated from the
address by a colon); for example, xyz.cisco.com;1234. If no port is specified,
the phone uses port 5060.
Value type: IP address, up to 47 characters.
Default value: 0.0.0.0 (port 5060 will be used)
Table A-5 SIP Parameters (continued)
Parameter Description