SpectraLink i640 User Manual

NetLink e340/h340/i640 Wireless Telephone

SIP User Agent: Features and Standards

Part Number: 72-1089-01

Issue C

SpectraLink Corporation SIP User Agent: Features and Standards

Notice

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Copyright © 2007 SpectraLink Corporation. All rights reserved

Information in this document is subject to change without notice and does not represent a commitment on the
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http://www.spectralink.com/softwareUpdates

between the user and SpectraLink Corporation OR (3) the terms and conditions previously agreed to in writing
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Part Number: 72-1089-01-C.doc Page 2

SpectraLink Corporation SIP User Agent: Features and Standards

1. User Agent Features

Feature Support

Registration:
Number of proxies Up to three
Number of contacts Up to five registered contact names
Voicemail subscription Yes, specified contact per proxy
Emergency Proxy Support No
Configuration:
Local admin menus Yes, for basic handset setup and network configuration
File download Yes, TFTP for handset code updates, SIP configuration
Telnet No
Dialing Support:
Phone directories
Contact list Yes, through OAI application
Incoming calls No
Outgoing calls No
Missed calls No
Redial last contact Yes (last dialed contact)
Last Call Return No (return last incoming call)
Message Center contact Yes (configured per proxy)
Numeric dialing Yes
Alphanumeric dialing Yes
Phone resident dial plan No
Speed dial contacts No
Hot Line No
Presence support No
Text messaging No
Time server support No
Line Appearances:
Number Up to five
Calls per line (per registration) Two
Max simultaneous calls 10, one with audio flowing
Security:
User Authentication Yes, MD5 per RFC 1321
Proxy Authentication Yes, MD5 per RFC 1321
TLS transport level security No
NAT Support:
Symmetric trans/rcv signaling port Yes
Symmetric trans/rcv audio port Yes
Signaling port keepalives No
Audio port keepalives No
STUN support No
External Applications Support:
OAI support Yes

Part Number: 72-1089-01-C.doc Page 3

SpectraLink Corporation SIP User Agent: Features and Standards

2. Telephony Features

Feature Support

Basic call support:
Hold Yes
Held call reminder No
Mute Yes
Do-not-disturb [Local] Yes, busy indication to calling party
Call waiting Yes, audio signal + displayed caller ID + line icon blinking
Distinctive ringing No
Auto-answer No
Multi stage digit collection Yes
Caller ID display Yes
Missed call notification No
Call Forwarding [Local] Yes, per line basis. Unconditional.
Call Transfer [Local] Yes, per RFC3515 and draft-ietf-sipping-service-examples-06
Conferencing [Local] No
Centralized Conferencing Yes, control through RFC 2833 or dtmf-relay content
Message Waiting Indication Yes, per line appearance. Either Subscribed or unsolicited

Notifications.
Call Park / Pickup [Local] No
Group Park / Group Pickup [Local] No
Automatic Call Distribution (ACD) No

[Local] indicates a feature managed by the handset rather than the PBX.

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SpectraLink Corporation SIP User Agent: Features and Standards

3. RFC 3261 Compliance

Feature Supported?

Transport:
UDP Yes
UDP retransmit timers Yes
UDP multicast No
TCP Yes
TLS No
IPv6 No
Fatal transport errs treated as 503
responses.
Loop detection No, From tag, callId, and Cseq match but no dialog match. – 482 resp.
Method processing:
Unsupported method response Yes, 501
Include “Allow” with all INVITEs Yes
Include “Supported” with all
INVITEs
Include “Accept” with all INVITEs Yes
Forked calls per RFC 3264 Yes
405 response to recognized but
unsupported method.
OPTIONS method resp should have
Accept header.
INVITE keep alive if no final response
(resend provisional response).
All requests can be challenged. Partial, REGISTER and INVITE only can be challenged.
Header processing:
Compact forms Yes
Repeated headers Yes for Via, Contact, Record-Route, Route, Proxy-Authenticate. Not for

Case sensitivity Yes for quoted strings, tags
Case insensitivity Yes for header names, methods, tokens, parameters.
Line wrapping Yes
UTF8 char set No, UTF8 strings are handled as identifiers, only US ASCII chars are

Via header in all responses Yes
Via header sentby in IP format Yes
Ignore unsupported headers Yes
Reject response with more than one
via header.
Allow whitespace in header parsing Yes
Via header support maddr and ttl No
URIs:
Name/Address forms Yes
sips: forms No
tel: forms No
user=phone forms No
Escape/unescape URIs as
parameters
Security:
User Authentication Yes, Digest
Proxy Authentication Yes, Digest credentials are not yet cached
Transport level security (TLS) No
SIP Proxies:
Proxy discovery methods No

No, 30 second timeout instead.

Yes

No

Yes

No.

WWW-Authenticate.

displayed.

No

Yes only for Refer-To: parameters.

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SpectraLink Corporation SIP User Agent: Features and Standards

4. SIP Extensions

Extension Supported?

RFC 3262 Reliability of provisional responses (PRACK, RSEQ,
RACK)
“Require” header, 421 responses
draft-ietf-sip-serverfeatures-05
“Diversion” header, diversion indication. Draft-levy-sip­diversion-04
SIP session timer. Session-Expires, Min-SE, “Refresher=”.
draft-ietf-sip-session-timer-13
UPDATE method. RFC 3311 No
REFER method, “Replaces” header, call transfer, RFC 3515.
draft-ietf-sipping-service-examples-06
Message waiting indication. NOTIFY, SUBSCRIBE, draft-mahy­sip-message-waiting-04. draft-ietf-sipping-mwi-02.
Dialog event package. Draft-ietf-sipping-dialog-package-03. Partial. No subscription to dialogs.
Caller identity and privacy. “Remote-Party-Id” header. Draft­ietf-sip-privacy-04
SIP Privacy. “Privacy”, “P-Asserted-Identity”, “P-Preferred­Identity” headers. RFC 3325, RFC 3323
“Reason” header. RFC 3326 No
SIP Offer-Answer model. RFC 3264 Yes
Locating SIP servers. RFC 3263 No
Specific Event Notification. SUSCRIBE, NOTIFY methods.
“Event” header. RFC 3265
Basic network media services.
Draft-burger-sipping-netann-08
Third-party call control 3pcc best current practice. RFC 3725 Partial
Registration event package. RFC 3680 No
Presence event package. RFC 3586.
Presence Info Data Format. RFC 3863
“Replaces” header.
draft-ietf-sip-replaces-05
Multi-MIME support. RFC 2387 No

Yes

No

No

No

Yes

Yes, simple-message-summary is processed per
proxy.

No

No

Yes. Does not accept SUBSCRIBE requests for dialog
events. Implicit subscriptions only for call transfer.
No

No

Yes

Part Number: 72-1089-01-C.doc Page 6

SpectraLink Corporation SIP User Agent: Features and Standards

5. Media Support

Feature Received? Transmitted?

Session Description Protocol:
v, o, s, t, m, c lines Yes Yes
Reject session if any lines unrecog No, unrecognized lines are ignored
v=0 Value is ignored Yes
Session id is NTP timestamp Accepted No, random integer
IP=0.0.0.0 as hold indicator Yes Yes, optional
‘sendonly’ as hold indicator Yes Yes
‘rcvonly’ response to ‘sendonly’ Ignored Yes
IPv6 No No
Telephone Event Signaling:
RFC 2833 Yes Yes, optional
RFC 2833 dynamic payload type Payloads ignored Yes
Inband DTMF Not detected, heard as audio No
Events signaled Ignored 0-9, #, * (Not A-D, hookflash)
INFO message signaling Ignored Yes, optional
Audio Codecs:
G.711 u-law (10, 20, 30, 60) 10, 20, 30, 60 msec frames 20 msec frames
G.711 A-law (10, 20 , 30, 60) 10, 20, 30, 60 msec frames 20 msec frames
G.729 (10, 20 30) No No
G.723.1 (30) No No
Silence suppression Ok No
Comfort Noise for G.711 Ok Yes
Comfort Noise per RFC3389 Ok No
RTCP Socket not open – unreachable No
SRTP No No
Offer / Answer Model:
INVITE without attached SDP Yes No
ACK with attached SDP Yes No
On-the-fly codec changes No No
Early audio cut-through for 183
call progress responses
Re-INVITE to change codec Yes No
Re-INVITE to change address Yes No
Multipart MIME No No
S/MIME No No

Yes No

Part Number: 72-1089-01-C.doc Page 7

SpectraLink Corporation SIP User Agent: Features and Standards

6. Supported Methods

Method Received? Transmitted?

ACK Yes Yes
BYE Yes Yes
CANCEL Yes, only for INVITE method Yes, only for INVITE method
INFO Yes, body ignored Yes, for dtmf-relay
INVITE Yes Yes
MESSAGE No No
NOTIFY Yes Yes
OPTIONS Yes Yes
PRACK Yes Yes
REFER Yes Yes
REGISTER No Yes
SUBSCRIBE No, implicit subscriptions only Yes, implicit and mail center

only

UPDATE No No

Part Number: 72-1089-01-C.doc Page 8

SpectraLink Corporation SIP User Agent: Features and Standards

7. Supported Responses

Response Received? Transmitted?

100 Trying Yes Yes
180 Ringing Yes Yes
181 Forwarded Treated like 100 No
182 Queued Treated like 100 No
183 Session Progress Treated like 180 No
200 OK Yes Yes
202 Accepted Yes Yes
300 Multiple Choices Yes, terminates call, reissues

INVITE to new contact
301 Moved Permanently Treated like 300 No
302 Moved Temporarily Treated like 300 Yes
305 Use Proxy Treated like 300 No
400 Bad Request Yes, terminates call Yes
401 Unauthorized Yes, terminates call. reissues

INVITE or REGISTER request
403 Forbidden Treated like 400 No
404 Not Found Treated like 400 Yes
405 Method Not Allowed Treated like 400 Yes
407 Proxy Authentication Required Yes, terminates call, reissues

INVITE or REGISTER request
408 Request Timeout Treated like 400 No
415 Unsupported Media Yes, does not yet reissue request Yes
420 Bad Extension Yes, does not yet reissue request No
480 Temporarily Unavailable Yes, does not yet reissue request Yes
481 Call Leg Does Not Exist Treated like 400 Yes
482 Loop Detected Yes, ignored No
483 Too Many Hops Yes, ignored No
484 Address Incomplete Yes No
486 Busy Here Yes, terminates call Yes
487 Request Terminated Treated like 400 No
491 Request Pending Yes, does not yet reissue request Yes
500 Server Internal Error Yes, does not yet reissue request Yes, for INVITE if INVITE is

501 Not Implemented Yes, but ignored Yes, if request method unrecog.
503 Service Unavailable Yes, terminates a call setup No
600 Busy Everywhere Yes, terminates a call setup No
603 Decline Yes, terminates a call setup Yes

No

No

No

already in progress

Part Number: 72-1089-01-C.doc Page 9

SpectraLink Corporation SIP User Agent: Features and Standards

8. Supported Headers

Header Received? Transmitted?

Accept Ignored Yes
Accept-Encoding Ignored No
Accept-Language Ignored No
Alert-Info Ignored No
Allow Ignored Yes
Allow-Events Ignored No
Also Ignored No
Authentication-Info Ignored No
Authorization Ignored No
Call-ID Yes Yes
Call-Info Ignored No
Contact Yes Yes
Content-Disposition Ignored No
Content-Language Ignored No
Content-Length Yes Yes
Content-Type Yes Yes
Content-Encoding Ignored No
Cseq Yes Yes
Date Ignored No
Diversion Ignored No
Error-Info Ignored No
Event Yes Yes
Expires Yes, register only Yes
From Yes Yes
In-Reply-To Ignored No
History-Info Ignored No
Max-Forwards Ignored Yes
Min-Expires Ignored No
Min-SE Ignored No
MIME-Version Ignored No
Organization Ignored No
P-Asserted-Identity Ignored No
Priority Ignored No
Proxy-Authenticate Ignored Yes
Proxy-Require Ignored No
RAck Yes No
Record-Route Yes Yes
Referred-By Yes Yes
Refer-To Yes Yes
Remote-Party-ID Ignored No
Replaces Yes Yes
Reply-To Ignored No
Requested-By Ignored No
Require Ignored No
Retry-After Yes, ignored currently Yes
Route Yes Yes
Rseq Yes Yes
Server Ignored No
Session-Expires Ignored No
Subject Ignored No
Subscription-State Yes Yes
Supported Ignored Yes
Timestamp Ignored No

Part Number: 72-1089-01-C.doc Page 10

SpectraLink Corporation SIP User Agent: Features and Standards

Header Received? Transmitted?

To Yes Yes
Unsupported Ignored No
User-Agent Ignored Yes
Via Yes Yes
Warning Ignored No
WWW-Authenticate Ignored Yes

Part Number: 72-1089-01-C.doc Page 11