Packet Mode B-Channel

Packet Mode B-Channel

Post by C. Roedenb » Tue, 27 Jul 2004 19:08:53


I have an application, which answers incoming data Calls.
Two types of clients may connect:

1. B1-Proto=0, B2-Proto=0, B3-Proto=0
2. B1-Proto=0, B2-Proto=0, B3-Proto=2.

After the incomming CONNECT_IND, I have to send
the correct CONNECT_RESP. Now I have to chose
to correct B3-Proto.

One possibility to solve this is to offer two
msn and decide from the called msn, which
B3-Proto to use. I would prefer to use only
one msn - so the configration of the clients need only
one outgoing number independet from the B3-Proto they

Is there a possibility to find out from the incoming data
if the client will use 1. or 2. before the server


Claus Renbeck

1. A changing user B's password so user A could log in under user B's identity.

2. PRI b-channel LCKO problem between Cisco VOIP Gateway and Nortel 61C

I have a PRI between a Nortel 61c and a Cisco VOIP phone system. It
allows us to 4-digit dial between the two phone systems. The PRI
terminates into a 6608 gateway blade in our 6509 chassis system on one
end and a PRI card in the Nortel (loop2) on the other. Every couple of
months, I would have to disable and re-enable Loop 2 because the
b-channels get locked out. Finding out why the channels go LCKO was not
a big issue at the time because it didn't happen any more often than
the b-channels on two other PRI's.
We recently deployed 7 Cisco VOIP wireless phones in a manufacturing
area with two Cisco access points and now I have to disable and
re-enable Loop 2 every other day. I noticed on my Nortel terminal one
morning an error referencing the loop and the channel and reason 44.
Does anyone know what causes b-channels to LCKO? Does anyone else have
any experience with this type of problem??
Thanks in advance.

3. B-Channel Negotiation

4. x.25 over b-channel

5. X25 Transpac connection on B-channel with CAPI 2.0

6. B-Channel without 0

7. PRI b-channel LCKO problem between Cisco VOIP Gateway and Nortel 61C

8. Single B-Channel (BRI?) service?

9. ISDN / B-channel

10. usability of channel mode versus fullscreen mode

11. FreeBSD Firewall Questions: (Regular) Packet Filtering vs. Stateful Packet Filtering vs. Dynamic Proxy Packet Filtering

12. Bad channel status reported for all contained channels - The specified channel is unconfigured

13. Does DDT from Counter input channel normally contain channel attributes (i.e. channel name)

14. SMB packet and secure channel signing