From what I see you want to use a fractional E1 PRI doing MGCP backhaul to Call Mgr. There is a way to do this where we can take certain B channels
out of service on the Call Manager. Am not sure of your Call Mgr version - here are the details on this:
This feature is to allow CallManager to change individual BChannel Maintenance status -
there are 5 service parameter defined in the ADVANCED service parameter section.
The service parameter names are:
ChangeBChannelMaintenanceStatus1
ChangeBChannelMaintenanceStatus2
ChangeBChannelMaintenanceStatus3
ChangeBChannelMaintenanceStatus4
ChangeBChannelMaintenanceStatus5
It allows maximum 5 PRI gateway to use this feature at the same time.
Note: To use this feature, the "Enable Status Poll" flag on the gateway configuration web page must be true(checked), update and reset gateway. The default value for that flag is unchecked.
Syntax:
DEVICE NAME = BCHANNEL MAINTENANCE STATUS.
Example:
S1/DS1-0@DLS2-CM136-VG200-2.SELSIUSCMLAB.CISCO.COM =
0000 0000 0000 0000 0000 0000 1111 1111
(32 bits for E1. BChannel number begins with 1 to 32 from left to right. The 16th channel
is DChannel. In this example, 25th-31th channels are marked out of service).
Explanation:
The DEVICE NAME MUST be exact the same as the gateway name on the top of
the gatway configuration web page. Please copy and paste that field into this service
parameter to avoid any manually inputting mistake.
"=" is mandatory and unique to distinguish the DEVICE NAME and BCHANNEL MAINTENANCE STATUS
fields.
BCHANNEL MAINTENANCE STATUS = xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx
Where x can be:
0: in service;
1: graceful out of service (change channel status until active call ends if there is an
active call on that channel);
2: forceful out of service (tear down active call first, then change channel status immediately if there is an active call on that channel).
Any other value will be treated as invalid and won't take effect. The total number of 'x' MUST be either 24 for T1 or 32 for E1. Any other invalid length or mismatch(e.g. 24 for E1) will be treated as error, and no action will be taken for that device.
SPACE: The spaces between device name and "=", between .=. and BCHANNEL MAINTENANCE
STATUS, between x and x, are all optional. No space is allowed inside the DEVICE NAME field.
Check if you have the above service parameter in your Call Mgr - the above config will be retained even if the GW is reset.
CSCed41207
CallManager needs support for MGCP fractional PRI
