Avaya Communication Manager Administrator's Manual page 1541

CESID I Digits Sent
For emergency 911 service, Communication Manager may send Caller's Emergency Service
Identification (CESID) information to the central office or E911 tandem server/switch. This digit
string is part of the E911 signaling protocol. This field appears when Group Type is cama.
Valid entries
1 to 3 digits
Comm Type
Use this field to define whether the trunk group carries voice, data, or both.
Note:
Comm Types of avd, rbavd and data require trunk member ports on a DS1
Note:
circuit pack.
Valid entries
avd
data
rbavd
voice
Usage
Determine the correct entry for this field by talking to
your E911 provider.
Usage
Enter avd for applications that mix voice and Digital Communication
Protocol data, such as video conferencing applications. The receiving
end media server or switch discriminates voice calls from data calls and
directs each to an appropriate endpoint. Neither originating nor
terminating ends insert a modem pool for any calls when Comm Type
is avd.
The Signaling Mode field on the DS1 Circuit Pack screen must be set
for either common-chan or CAS signaling.
Enter data only when all calls across the trunk group originate and
terminate at Avaya Communication Manager digital data endpoints.
Public networks don't support data: supported by Avaya's DCP
protocol, this entry is used almost exclusively for the data trunk group
supporting DCS signaling channels.
The Signaling Mode field on the DS1 Circuit Pack screen may be set
to robbed-bit or common-chan.
For digital trunk groups that carry voice and data with robbed-bit
signaling.
The Signaling Mode field on the DS1 Circuit Pack screen must be set
to robbed-bit unless mixed mode signaling is allowed on the DS1
circuit pack. In that case, the Signaling Mode field may be isdn-ext or
isdn-pri.
For trunk groups that carry only voice traffic and voice-grade data (that
is, data transmitted by modem). Analog trunk groups must use voice.
Trunk Group
Issue 1 June 2005 1541