VoIP Extensions

Release Notes (System)

Busy Lamp Field Status for Third-Party SIP Telephones

[3.00.35] In prior versions, a keyset's Hotline or Call Coverage key BLF was not fully functional when the key was assigned to a third-party SIP extension. For example, there was no BLF indication for any call placed from the third-party SIP extension. Additionally, if a call was ringing the SIP extension, the BLF coverage would continue after the SIP extension user answered. These issues are now corrected.

Reference: None

Double-Digit Dialing at SIP Extensions

[3.05] An error is corrected that could cause calls dialed from a 3rd-party SIP telephone to output double-digits on CO lines if the SIP telephone had audio cut-through to the outside line prior to dialing. This could happen, for example, if the user dialed 9, listened for outside dial tone, and then dialed the rest of the number.

This double-digit dialing problem would only occur if the SIP telephone was dialing digits in-band or was using RFC2833 . The system would re-generate digits that were already presented to the outside line in-band.

Reference: None

Echo Canceller Inadvertently Disabled

[3.00.32] The Echo Canceller was inadvertently disabled in version 3.00.30. It is now fully functional.

Reference: None

Extension Number Swap Causes One-Way

[3.01] A problem is corrected where swapping two IP extension numbers in programming would cause a one-way audio path..

Reference: A090701004

Internal VOIPDB Gateway Address Changed

[3.00.35] The IP address of the internal VOIPDB gateway is changed from 10.0.0.1 to 10.254.254.1. This makes the DSX VoIP more compatible with 10.0.0.xx networks.

Reference: None

IP Keyset Stuck in Connecting Mode

[3.01] A correction is made in this version to prevent an IP keyset from becoming stuck in the Connecting to DSX state. The keyset will now automatically de-register so the connection process can begin again.

Reference: A090615002

IP Performance Degrades Under Load

[3.01] This software version corrects a memory utilization problem that would cause IP performance to continually degrade under heavy traffic. The system would have to be reset to clear the problem.

Reference: A090609006

IP Port Registration and Licensing

[3.00.35] Up to 32 IP telephones can be connected to the system, and the number that can be on a call simultaneously is set by the IP port licensing. In prior versions, the licensing also limited the number of IP telephones that could be connected.

Reference: None

Lockup Under Heavy Traffic

[3.00.35] Improvements have been made to the system's IP traffic handling to minimize the likelihood of lockups under heavy IP traffic situations.

Reference: A090529005

MAC Address Incorrect After Startup

[3.00.32] An issue is corrected that could cause IP Keysets to report the MAC address of the VoIPDB after startup or reset. This could potentially cause no audio.

Reference: A090508008

MAC Address Not Updated After Swap

[3.00.32] If an IP keyset is replaced at the same extension, the MAC address reported to the system matches the new keyset. In prior versions, the old address would be retained until reboot potentially causing no audio.

Reference: A090512001

Multicast Option Added - Not Implemented

[3.00.32] This option is added in this release but is currently not used.

Reference: None

One-Way Audio on IP After Reboot

[3.01] A problem is corrected where IP telephones would get one-way audio if DHCP was enabled and the system was reset.

Reference: A090618001

Pressing SPEAKER During Connect Resets IP Telephone

[3.00.35] In prior releases, pressing SPEAKER while the IP keyset displays Connecting will cause the keyset to continually reset. This is corrected.

Reference: A090611008

RTP Range End Narrowed

[3.00.32] The RTP port range is the setting of 1801-04: RTP Range Start plus 64. This accommodates the 32 RTP ports and 32 RTCP ports required by the system's 32 maximum VoIP ports. In prior versions, the upper end of the RTP range was set in 1801-05: RTP Range End and was 65536 by default.

Reference: A090513012

Selecting G.723 Codec Resets System (3.05)

[3.05] A problem is corrected which would cause the system's VoIP processes to crash if the G.723 Codec was selected in 1812: Codec Type for the active VoIP Profile. Note that G.723 only is only supported by some 3rd-party SIP telephones. It is not a valid Codec type for DSX IP keysets.

Reference: None

SIP Extensions Don't Advance Past First Codec

[3.05] In prior version 3 releases, a 3rd-party SIP telephone could not negotiate past the first Codec in the 1812: Codec Type list. This is corrected.

Reference: None

SIP Server Setup Using URL Available

[3.02] When using the IP keyset Admin to enter the SIP server address, you can enter either the IP address or the SIP server's URL (if any). Although more useful when connecting to the keyset Admin from your PC browser, URL entry is also available from the telephone.
  • IP/URL switches between the IP address and URL modes.
  • While in the URL mode:
    • * switches between upper case, lower case, and numeric entry.
    • 1 in the text entry mode enters periods and other special characters.
    • VOLUME keys scroll left and right.
    • DEL deletes the character to the left of the cursor.

Reference: None

Telephone Programming Interface Improved for 1812: Codecs

[3.00.32] The telephone programming interface for 1812: Codecs is improved. After selecting a profile, pressing Hold now moves through the options for the selected profile.

Reference: A090318002

Third-Party SIP Telephones Forced to Reregister

[3.05] The system forces third-party SIP telephones to reregister every 180 seconds. This minimizes the possibility that third-party SIP telephones will deregister and go out of service.

Reference: None

VoIP Profile 4 Disables VoIP

[3.01] A problem is corrected where selecting VoIP Profile 4 would cause the system's VoIP processes to fail.

Reference: A090623004