I have a MICS with a VoIP Gateway at one site and 2 BCM 50's at 2 other locations. There are no problems with calls completing. The issue is the amount of time it takes for the calls to complete from either the MICS to a BCM or a BCM to the MICS. There is about an 8 second delay before ringing occurs after an extension is dialed. The problem does not occur between the 2 BCM's. Does anyone know if the delay is inherent to the VoIP gateway or if there are any settings within the gateway or the BCM 50 to alleviate the problem. Dialing between the BCM 50's does not have this problem.
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MICS with VoIP Gateway to BCM 50's
- Thread starter uofm
- Start date
bighands2468
Programmer
- Aug 2, 2006
- 48
EMAIL FROM NORTEL IN RESPONSE TO THIS QUESTION:
Thank you for contacting Nortel Networks.
In response to your inquiry:
Is there a delay issue with the VoIP Gateway?
Response:
As per the Distributor Technical Reference Bulletin: DTR-2004-0521-NA, Date: 17 December 2004 ,Norstar VoIP Gateway Ring-back delay,
In some scenarios a user initiating a VoIP call to a Norstar with a Norstar VoIP Gateway connected could experience a delay before ring-back is heard.
A call to a Norstar VoIP Gateway that has the DID option (Digit Delivery table) configured can experience up to 9 seconds of delay before the ring-back is heard. These delays are caused by a series of call processing steps that are inherent in the way the Norstar processes DID information.
Possible actions to reduce Ring-back delay
• With two or more Norstar systems networked using Norstar VoIP Gateways, configure the Gateways to play ring back tone to the Norstar system by setting the "Play ringback Tone to Tel" parameter to "Play".
This will play a ring back tone to the calling party as the call is being setup. Depending on the line and set configuration for busy treatment in the Norstar, the caller may hear ring-back tone followed by busy tone. This can be avoided by proper configuration of the sets and lines. For example forward busy to voice mail for the set, and ensuring that a prime set is defined for the physical lines. Please note: When the ringback tone from Norstar cuts in there will be a momentary break in the ringback cadence since it is not synchronized with the gateway ring cadence
If you choose not to implement the above actions the following additional actions will minimize the silent period before ring-back starts.
• Ensure that "#" is dialed after the phone number has been entered. This is only applicable for gateway to gateway calls.
o This indicates the end of dial digits and eliminates the standard time-out delay waiting for additional digits.
• Use "P" or "PP" instead of "D" prior to digit delivery. This can be adjusted in the Digit Delivery Table.
o Each "P" inserts a 1.5 second pause before the digits are delivered from the Gateway to the Norstar system instead of waiting for dial-tone which could take up to 6
I trust that you will find this information helpful.
For further assistance and a timely response, please "REPLY" to this
email, including your original correspondence and contact information.
This response will close your case.
Thank you for contacting Nortel Networks.
In response to your inquiry:
Is there a delay issue with the VoIP Gateway?
Response:
As per the Distributor Technical Reference Bulletin: DTR-2004-0521-NA, Date: 17 December 2004 ,Norstar VoIP Gateway Ring-back delay,
In some scenarios a user initiating a VoIP call to a Norstar with a Norstar VoIP Gateway connected could experience a delay before ring-back is heard.
A call to a Norstar VoIP Gateway that has the DID option (Digit Delivery table) configured can experience up to 9 seconds of delay before the ring-back is heard. These delays are caused by a series of call processing steps that are inherent in the way the Norstar processes DID information.
Possible actions to reduce Ring-back delay
• With two or more Norstar systems networked using Norstar VoIP Gateways, configure the Gateways to play ring back tone to the Norstar system by setting the "Play ringback Tone to Tel" parameter to "Play".
This will play a ring back tone to the calling party as the call is being setup. Depending on the line and set configuration for busy treatment in the Norstar, the caller may hear ring-back tone followed by busy tone. This can be avoided by proper configuration of the sets and lines. For example forward busy to voice mail for the set, and ensuring that a prime set is defined for the physical lines. Please note: When the ringback tone from Norstar cuts in there will be a momentary break in the ringback cadence since it is not synchronized with the gateway ring cadence
If you choose not to implement the above actions the following additional actions will minimize the silent period before ring-back starts.
• Ensure that "#" is dialed after the phone number has been entered. This is only applicable for gateway to gateway calls.
o This indicates the end of dial digits and eliminates the standard time-out delay waiting for additional digits.
• Use "P" or "PP" instead of "D" prior to digit delivery. This can be adjusted in the Digit Delivery Table.
o Each "P" inserts a 1.5 second pause before the digits are delivered from the Gateway to the Norstar system instead of waiting for dial-tone which could take up to 6
I trust that you will find this information helpful.
For further assistance and a timely response, please "REPLY" to this
email, including your original correspondence and contact information.
This response will close your case.
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