iPECS eMG80 & eMG800 & UCP
Administration and Programming Manual Issue 1.6
468
Table 4.4.8.7-1 SIP PHONE ATTRIBUTES
ATTRIBUTE DESCRIPTION RANGE DEFAULT
the Station Login PGM 443.
181 Being Forwarded N/A
OFF
OFF
100 rel Support N/A
OFF
OFF
Session Timer
Support
During a SIP call or “session”, there are no signaling
packets sent or received from the SIP Call server. In
order to assure a session is still active, the system can
periodically send an Update message that the SIP Call
server should acknowledge.
OFF
ON
OFF
Max Session Timer
When “Session Timer Support” is enabled, the system
will verify the session at this timer interval.
180-3600 1800
Min Session Timer
During negotiation with “Session Timer Support”
enabled, the system will use this value as the minimum
Session expiration timer and will not respond to a SIP
Option message prior to expiration of this timer.
60-150 90
Within same firewall
with UCP (MPB)
For a remote SIP phone, the system must
communicate with the phone employing the system’s
“Firewall” address (OFF). Otherwise, the system
employs the LAN address to communicate with the SIP
OFF
ON
ON
SRTP Usage
When supported by the SIP phone, the system can
encrypt media (RTP) packets employing SRTP (Secure
OFF
ON
OFF
1
st
CRYPTO
The first priority cryptographic method for SRTP is
selected from the below:
None
ARIA_CM_192_HMAC_SHA1_80
AES_CM_128_HMAC_SHA1_80
ARIA_CM_128_HMAC_SHA1_80
AES_CM_192_HMAC_SHA1_80
ARIA_CM_256_HMAC_SHA1_80
None
2
nd
CRYPTO
The second priority cryptographic method for SRTP is
selected from the below:
None
ARIA_CM_192_HMAC_SHA1_80
AES_CM_128_HMAC_SHA1_80
ARIA_CM_128_HMAC_SHA1_80
AES_CM_192_HMAC_SHA1_80
ARIA_CM_256_HMAC_SHA1_80
None
DTMF Type
DTMF dialing signals sent by the SIP phone must be
defined for the system to detect the tones properly. For
Inband DTMF, a VoIP channel is required.
INBAND,
2833,
INFO(SIMPLE
DTMF),
INFO(NORTEL
NETWORKS),
INFO(DTMF
RELAY)