Configure Response Status Code Handling; Configure Rtp Parameters - Cisco 8831 Administration Manual

Configure SIP
Parameter
Reg Retry Random
Delay
Reg Retry Long
Random Delay
Reg Retry Intvl Cap
1. The phone can use a RETRY-AFTER value when it is received from a SIP proxy server that is too busy to process a

Configure Response Status Code Handling

To configure response status code handling , under Response Status Code Handling make these
changes:
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Configure RTP Parameters

To configure Real-time Transport Protocol (RTP), navigate to Admin Login > advanced > Voice > SIP.
Under RTP Parameters, configure these fields:
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Cisco Unified IP Conference Phone 8831 for Third-Party Call Control Administration Guide
3-6
Description
Random delay added to the Register Retry Intvl value when retrying
REGISTER after a failure. Minimum and maximum random delay to be
added to the short timer. The range is from 0 to 2147483647. Defaults to
0, which disables this feature.
Random delay added to Register Retry Long Intvl value when retrying
REGISTER after a failure.
Minimum and maximum random delay to be added to the long timer.
Random delay range (in seconds) to add to the Register Retry Long Intvl
when retrying REGISTER after a failure. Defaults to 0, which disables
this feature.
Reg_Retry_Intvl_Cap—Maximum value of the exponential delay. The
maximum value to cap the exponential backoff retry delay (which starts
at the Register Retry Intvl and doubles every retry). Defaults to 0, which
disables the exponential backoff (that is, the error retry interval is always
at the Register Retry Intvl). When this feature is enabled, the Reg Retry
Random Delay is added to the exponential backoff delay value. The range
is from 0 to 2147483647.
request (503 Service Unavailable message). If the response message includes a RETRY-AFTER header, the phone waits
for the specified length of time before to REGISTER again. If a RETRY-AFTER header is not present, the phone waits
for the value specified in the Reg Retry Interval or the Reg Retry Long Interval.
Try Backup RSC—SIP response code that retries a backup server for the current request. Defaults
to blank.
Retry Reg RSC—Interval the device waits before re-trying registration after a failed registration.
Defaults to blank.
RTP Port Min—Minimum port number for RTP transmission and reception. <RTP Port Min> and
<RTP Port Max> defines a range that contains at least 10 even number ports (twice the number of
lines); for example, 100–106. Defaults to 16384.
RTP Port Max—Maximum port number for RTP transmission and reception. <RTP Port Min> and
<RTP Port Max> should define a range that contains at least 10 even number ports (twice the number
of lines); for example, 100–106. Defaults to 16482.
RTP Packet Size—Packet size in seconds. The range is from 0.01 to 0.16. Valid values must be a
multiple of 0.01 seconds. Defaults to 0.02.
RTCP Tx Enable—To enable Real-Time Transport Control Protocol (RTCP) sender report on an
active connection. Defaults to no.
Chapter 3 Configure SIP and NAT