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G700 H.248 link problem

G700 H.248 link problem

G700 H.248 link problem

I'm having a problem with an S8300 that I'm administering at the office. The phones periodically reset due to an H.248  registration failure between the 2 G700's, one with the S8300 the master stack and the other the slave stack. I've also noticed that error type 769 occurs roughly every 10 minutes, usually the 2 media gateways are alternating. By the way, here's the error display I'm getting:

Port      Mtce     Alt      Err   Aux     First       Last     Err Err Rt/ Al Ac
          Name     Name     Type  Data    Occur       Occur    Cnt Rt  Hr  St

001       MED-GTWY          769   0     07/22/00:32 07/22/00:32 1   0   1   r  n
002       MED-GTWY          769   0     07/22/00:43 07/22/00:43 1   0   1   r  n
002       MED-GTWY          769   0     07/22/01:04 07/22/01:04 1   0   1   r  n
001       MED-GTWY          769   0     07/22/01:13 07/22/01:13 1   0   1   r  n
002       MED-GTWY          769   0     07/22/01:25 07/22/01:25 1   0   1   r  n
001       MED-GTWY          769   0     07/22/01:32 07/22/01:32 1   0   1   r  n
001       MED-GTWY          1     0     07/22/01:35 07/22/01:35 1   0   1   r  n

S8700 / S8500 / S8300 / G700
This maintenance object monitors the H.248 link to the Avaya G700 Media Gateway. It logs errors when
the Keep Alive messages that are exchanged between the server and G700 fail. These messages indicate
the status of the H.248 link between the two. If the keep alive messages are active all is well, if not an
error is logged.

Error log entries and test to clear values

• (a) Error Type 1: this error type indicates a failure of the H.248 link keep alive messages
between the server and the G700. This is an indication that the LAN or the platform is down.
• (b) Error Type 257: If the server is an LSP, this error type indicates that at least one Media
Gateway is registered with the LSP.
• (c) Error Type 513: this error type indicates that there is a problem on the G700. Log on to the
G700 and check the error log for problems using the MGP CLI.
• (d) Error Type 769: this error type is a transient error, indicating that the link has unregistered
with the G700. If the G700 re-registers, the alarm is resolved. If the link loss delay timer on the
primary server expires, Error Type 1 is logged.

System Technician-Demanded Tests:
Descriptions and Error Codes
There are no System Technician-Demanded Tests associated with this MO.


I'm not sure what's causing the H.248 failure since I've not seen anything explained in the manuals. I've done anything that I could think of, even a full reconfigure of the media gateways. Can it be a hardware failure? Up to now I'm still getting those resets so I really appreciate all the help!

RE: G700 H.248 link problem

when you installed this, did the problem go away? if not, how do you repair the problem?

RE: G700 H.248 link problem

I'm sorry I haven't updated my post. The problem was resolved a long time ago. It was caused by a duplicate IP between the S8300 and another server which was newly installed then.

RE: G700 H.248 link problem

As an FYI>. There is a patch out there that addresses an issue regarding duplicate MAC addresses on 8300's.

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