Codecs 79

OR

PRT IPDN <subnet of the WLAN IP Telephony Manager 2245 group>

Alias IP address

Using the DN of a wireless handset, support personnel can obtain the current or most recent alias IP address used by a wireless handset when it checked in with the master of a WLAN IP Telephony Manager 2245 group, and subsequently registered with the LTPS and Call Server.

=> PRT DNIP <DN of wireless handset>

Wireless telephone type designation

Unless there is another preferred use for the DES (Designator) prompt in LD 11, Nortel recommends using the DES prompt to indicate the type of WLAN Handset—either type 2210, 2211, 2212, or 6120—for the i2004 type of virtual line TN. This allows support personnel to enter 2210, 2211, 2212 or 6120 at the LD 20 DES prompt and receive a list of handsets that are configured on the Call Server.

Call blocking

The WLAN IP Telephony Manager 2245 controls the media stream and blocks calls due to bandwidth constraints on any AP without notifying the Call Server.

The WLAN IP Telephony Manager 2245 can be configured with the maximum number of simultaneous calls allowed on a single AP.

On an incoming call for a wireless handset associated with a full AP, the caller hears ringback and the Call Forward No Answer (CFNA) treatment is applied, such as forwarding the call to voice mail. The called party is not notified of the incoming call.

If the call originates from a wireless handset that is on a bandwidth-restricted AP, the caller hears a warning tone and the call is blocked.

If a wireless handset moves into an area serviced by an AP that is already at capacity, the wireless handset does not associate with the new AP. Instead, the wireless handset attempts to remain associated with an AP that has sufficient bandwidth. This could result in packet loss, degraded signal and voice quality, and a call could be dropped.

UNIStim signaling, such as watchdog updates or lamp audit, are not affected by the bandwidth constraint.

Codecs

G.711, G.729A, and G.729B codecs are supported. The RTP packets that transit between the wireless handsets and the WLAN IP Telephony Manager 2245 always contain 30 ms of voice. The WLAN IP Telephony Manager

Nortel Communication Server 1000

WLAN IP Telephony Installation and Commissioning

NN43001-504 01.02 Standard

Release 5.0 15 June 2007

Copyright © 2004-2007, Nortel Networks

Page 79
Image 79
Nortel Networks NN43001-504 manual Codecs, Alias IP address, Wireless telephone type designation, Call blocking