iPECS eMG80/100& eMG800 & UCP & vUCP
Administration and Programming Manual Issue 2.5
277
Table 4.4.8.7-1 SIP PHONE ATTRIBUTES
The system can challenge the SIP phone during registration and
outgoing call setup. A SIP 407 Authentication message requires the
SIP phone to provide the Authentication Id and password assigned
in the Station Login PGM 443.
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.
When “Session Timer Support” is enabled, the system will verify the
session at this timer interval.
During the 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 Options message prior to the
expiration of this timer.
Within same
firewall with
UCP (MPB)
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 phone.
When supported by the SIP phone, the system can encrypt media
(RTP) packets employing SRTP (Secure Real-Time Protocol).
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
AES_CM_256_HMAC_SHA1_80
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
AES_CM_256_HMAC_SHA1_80
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