Polycom SIP 3.0.2 Manuale Utente

Administrator’s Guide SoundPoint IP / SoundStation IP 

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voIpProt.server.x.transport

DNSnaptr or

TCPpreferre

d or

UDPOnly or 

TLS or

TCPOnly

DNSnapt

r

If set to Null or DNSnaptr: 

If voIpProt.server.x.address is a 

hostname and voIpProt.server.x.port is 0 or 

Null, do NAPTR then SRV look-ups to try to 

discover the transport, ports and servers, as 

per RFC 3263. If 
voIpProt.server.x.address

 is an IP 

address, or a port is given, then UDP is used.
If set to TCPpreferred:

TCP is the preferred transport, UDP is used if 

TCP fails.
If set to UDPOnly:

Only UDP will be used.
If set to TLS:

If TLS fails, transport fails. Leave port field 

empty (will default to 5061) or set to 5061. 
If set to TCPOnly:

Only TCP will be used.
NOTE: TLS is not supported on SoundPoint 
IP 300 and 500 phones.

voIpProt.server.x.expires

positive 

integer, 

minimum 

300

3600

The phone’s requested registration period in 

seconds.
Note: The period negotiated with the server 
may be different. The phone will attempt to 
re-register at the beginning of the overlap 
period. For example, if “expires”=3600 and 
“overlap”=60, the phone will re-register after 
3540 seconds (3600 – 60)

.

voIpProt.server.x.expires.overlap

positive 

integer, 

minimum 5, 

maximum 

65535

60

The number of seconds before the expiration 

time returned by server x at which the phone 

should try to re-register. The phone will try to 

re-register at half the expiration time returned 

by the server if that value is less than the 

configured overlap value.

voIpProt.server.x.register

0, 1

1

If set to 0, calls can be routed to an outbound 

proxy without registration.

voIpProt.server.x.retryTimeOut

Null or 

non-negativ

e integer

0

If set to 0 or Null, use standard RFC 3261 

signaling retry behavior. Otherwise 

retryTimeOut determines how often retries 

will be sent. 
Units = milliSeconds. (Finest resolution = 

100ms).