ZyXEL Communications P-2302R-P1C manual Duration, Register Re-send, Timer, Session Expires, Min-SE

P2302R-P1C Support Notes

Duration	re-register your SIP account when one-half of this time has passed. (The
	SIP register server might have a different expiration.)
Register Re-send	Enter the number of seconds the ZyXEL Device waits before it tries again to
Timer	register the SIP account, if the first try failed or if there is no response.
Session Expires	Enter the number of seconds the conversation can last before the call is
	automatically disconnected. Usually, when one-half of this time has passed,
	the ZyXEL Device or the other party updates this timer to prevent this from
	happening.
Min-SE
	Enter the minimum number of seconds the ZyXEL Device accepts for a
	session expiration time when it receives a request to start a SIP session. If
	the request has a shorter time, the ZyXEL Device rejects it.
RTP Port Range
Start Port	Enter the listening port number(s) for RTP traffic, if your VoIP service
End Port	provider gave you this information. Otherwise, keep the default values.
	To enter one port number, enter the port number in the Start Port and End
	Port fields.
	To enter a range of ports,
	• Enter the port number at the beginning of the range in the Start Port field
	• Enter the port number at the end of the range in the End Port field.
Voice	Select the type of voice coder/decoder (codec) that you want the ZyXEL
Compression	Device to use. G.711 provides higher voice quality but requires more
	bandwidth (64 kbps).
	• G.711A is typically used in Europe.
	• G.711u is typically used in North America and Japan.
	In contrast, G.729 only requires 8 kbps.
	The ZyXEL Device must use the same codec as the peer. When two SIP
	devices start a SIP session, they must agree on a codec.

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